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Kenji Takashima patents

Recent patents with Kenji Takashima listed as an inventor - additional entries may be under other spellings.


Kenji Takashima - Related organizations: Canon Kabushiki Kaisha patents

Optical member and image pickup apparatus

05/05/16 - 20160124121 - An optical member includes a base and a low-refractive-index layer disposed on the base and containing particles having a refractive index lower than that of the base. A plurality of projections are formed on a surface of the low-refractive-index layer. The width of the projections is 5 nm or more
Inventors: Akira Sugiyama, Akiko Takei, Norishige Kakegawa, Kenji Takashima, Zuyi Zhang, Yoshinori Kotani, Naoyuki Koketsu

Porous laminate

03/10/16 - 20160069005 - Provided is a porous laminate having satisfactory resistance to a mechanical load such as a bending stress while maintaining the characteristics of a porous structure. A porous laminate includes: a layer A formed on a support, the layer A including a porous film containing polymer nanofibers; and a layer B
Inventors: Kenji Takashima, Tetsuo Hino, Kazuhiro Yamauchi

Polymer nanofiber structural body and polymer nanofiber composite using the structural body, and methods of producing the structural body and the composite

10/01/15 - 20150273812 - A method of producing a polymer nanofiber structural body of the present invention includes: forming, on a base material, a first layer in which polymer nanofibers are irregularly integrated by an electrospinning method; cutting the first layer together with the base material; and irradiating an argon beam from a base
Inventors: Kenji Takashima, Tetsuo Hino, Kazuhiro Yamauchi

Polymer nanofiber structural body and method of producing the same

10/01/15 - 20150273377 - A polymer nanofiber structural body of the present invention is a polymer nanofiber structural body in which polymer nanofibers are integrated, including a first layer and a second layer different from each other in polymer nanofiber existence ratio, in which: both the first layer and the second layer are laminated
Inventors: Kenji Takashima, Tetsuo Hino, Kazuhiro Yamauchi

Nanofiber structural body and collecting apparatus using the nanofiber structural body, and method of producing the nanofiber structural body

10/01/15 - 20150273366 - Based on an electrospinning method, a layer A formed of a polymer continuous phase is formed by: setting a potential difference between an ejection portion configured to eject a polymer solution and a collecting portion configured to collect the polymer nanofibers to a voltage value at which the polymer nanofibers
Inventors: Kenji Takashima, Tetsuo Hino, Kazuhiro Yamauchi

Optical member, image pickup apparatus, and method for manufacturing optical member

05/28/15 - 20150146074 - The optical member is provided with a base member and a glass layer holding a transparent material in the inside of a porous structure disposed on the base member, wherein in the thickness direction of the glass layer, the porosity in the base member side with respect to the center
Inventors: Akiko Takei, Zuyi Zhang, Yoshinori Kotani, Akira Sugiyama, Kenji Takashima, Naoyuki Koketsu

Optical member, image pickup apparatus, and method for manufacturing optical member

05/21/15 - 20150138422 - An optical member has a base material 1 and a porous glass layer 2 which is formed on the base material 1 and has a three-dimensional through pore, in which the existence ratio of crystals of 0.2 micrometer or more in the porous glass layer 2 is 1.0% or lower.
Inventors: Akira Sugiyama, Zuyi Zhang, Yoshinori Kotani, Akiko Takei, Norishige Kakegawa, Kenji Takashima, Naoyuki Koketsu, Tomoaki Masubuchi

Optical member, image pickup apparatus, and method for manufacturing optical member

04/16/15 - 20150103406 - An optical member has a base member (1) and a porous glass layer (2) formed on the base member (1), in which a textured structure is formed on the interface contacting the porous glass layer (2) of the base member (1) and the height of the textured structure is 100
Inventors: Kenji Takashima, Zuyi Zhang, Yoshinori Kotani, Akiko Takei, Akira Sugiyama, Naoyuki Koketsu

Optical member, image pickup apparatus, and method for manufacturing optical member

11/13/14 - 20140335346 - The optical member has a porous glass layer on a substrate. The porous glass layer includes a first porous glass layer and a second porous glass layer in this order on the substrate. The first porous glass layer has a uniform porosity. The second porous glass layer has a higher
Inventors: Akira Sugiyama, Zuyi Zhang, Yoshinori Kotani, Akiko Takei, Kenji Takashima, Naoyuki Koketsu

Optical member, image pickup apparatus, and method for manufacturing optical member

10/30/14 - 20140320728 - The optical member includes the porous glass layer which is disposed on the base member and which has a thickness of 400 nm or more, wherein the porous glass layer includes at least a gradient region having a porosity increasing from the interface between the base member and the porous
Inventors: Akira Sugiyama, Zuyi Zhang, Yoshinori Kotani, Akiko Takei, Kenji Takashima, Naoyuki Koketsu

Imaging apparatus and image forming apparatus

10/23/14 - 20140313391 - An imaging apparatus for imaging a subject image from a lens on an imaging element through an optical filter has a porous body having pores which three dimensionally communicate with each other at least at a side opposite to the imaging element of the optical filter.
Inventors: Zuyi Zhang, Yoshinori Kotani, Akira Sugiyama, Kenji Takashima, Naoyuki Koketsu

Method for manufacturing optical member and method for manufacturing image pickup apparatus

10/16/14 - 20140305166 - A method for manufacturing an optical member provided with a porous glass film on the base member includes the steps of forming a glass powder film containing a glass powder on the base member, forming a phase-separable base material glass film on the base member by heating and fusing the
Inventors: Naoyuki Koketsu, Zuyi Zhang, Yoshinori Kotani, Akiko Takei, Akira Sugiyama, Kenji Takashima

Method for manufacturing optical member

10/09/14 - 20140299573 - A method for manufacturing an optical member provided with a porous glass layer on a base member includes the steps of forming an intermediate layer containing at least one of silicon, potassium, and aluminum on the base member, forming a phase-separable glass layer on the intermediate layer, forming a phase-separated
Inventors: Kenji Takashima, Zuyi Zhang, Yoshinori Kotani, Akiko Takei, Akira Sugiyama, Naoyuki Koketsu

Optical member, image pickup apparatus, and method for manufacturing optical member

10/02/14 - 20140293114 - The optical member includes the base member and the porous glass film disposed on the base member, wherein the porosity increases in the direction from the base member toward the porous glass film in an interfacial region between the base member and the porous glass film and the porosity is
Inventors: Naoyuki Koketsu, Zuyi Zhang, Yoshinori Kotani, Akiko Takei, Akira Sugiyama, Kenji Takashima

Method for manufacturing porous glass, and method for manufacturing optical element

12/19/13 - 20130333419 - A method for manufacturing a porous glass includes: forming a phase-separated glass by heating at a temperature in a range of 300 to 500 degrees Celsius for 3 to 50 hours for phase separation of a glass body in which the concentration of SiO2 is 50 to 70 percent by
Inventors: Naoyuki Koketsu, Zuyi Zhang, Yoshinori Kotani, Akira Sugiyama, Kenji Takashima

Method of manufacturing porous glass

09/12/13 - 20130233018 - To provide a method of manufacturing a porous glass in which the porosity decreases as a function of the distance from the surface in the direction of depth. A method of manufacturing a porous glass includes a step of bringing one or more than one ion species selected from silver
Inventors: Kenji Takashima, Zuyi Zhang, Yoshinori Kotani, Akira Sugiyama, Naoyuki Koketsu

Porous glass, method of manufacturing the same and optical element

08/29/13 - 20130224494 - This invention provides a porous glass with a varied porous structure that shows an excellent optical performance. A method of manufacturing a porous glass comprising: a first step of forming a surface layer containing a boron compound and an alkali metal compound as main ingredients on a matrix glass containing
Inventors: Yoshinori Kotani, Zuyi Zhang, Akira Sugiyama, Kenji Takashima, Naoyuki Koketsu

Optical member and imaging apparatus

08/22/13 - 20130216775 - Provided is an optical member having high strength, low reflection, and a high transmittance. The optical member includes: a transparent substrate; and a porous glass layer having a spinodal-type porous structure disposed on the transparent substrate, in which at least one of the average pore diameter of a pore formed
Inventors: Akira Sugiyama, Zuyi Zhang, Yoshinori Kotani, Kenji Takashima, Naoyuki Koketsu

Porous glass, method for manufacturing porous glass, optical member, and image capture apparatus

08/01/13 - 20130194483 - A porous glass having high strength and a low refractive index, an optical member by using the porous glass, and a method for manufacturing the porous glass are provided. A method for manufacturing a porous glass includes the steps of heat-treating a glass body, which can be phase-separated through heating
Inventors: Kenji Takashima, Zuyi Zhang, Yoshinori Kotani, Akira Sugiyama

Method for producing porous glass

08/01/13 - 20130192306 - A method for producing a porous glass includes the steps of preparing a glass body containing boron, subjecting the glass body to heat treatment for phase separation, and bringing the phase-separated glass body into contact with a boron-containing solution having a boron concentration of 5 to 140 ppm.
Inventors: Akira Sugiyama, Zuyi Zhang, Yoshinori Kotani, Kenji Takashima

Porous glass and optical member

06/20/13 - 20130157026 - The present invention provides a porous glass having excellent antireflection performance for visible light. A porous glass includes a porous layer which is mainly composed of silica and which has pores attributed to spinodal phase separation and pores attributed to binodal phase separation.
Inventors: Yoshinori Kotani, Zuyi Zhang, Kenji Takashima, Akira Sugiyama

Method of producing glass

03/28/13 - 20130074548 - Provided is a method of producing porous glass having pores with a uniform pore diameter entirely, particularly in the case of phase-separated glass, including selectively removing a denatured layer formed on the surface of glass easily. The method of producing glass includes: forming phase-separated glass containing silicon oxide, boron oxide,
Inventors: Kenji Takashima, Zuyi Zhang, Yoshinori Kotani

Method of producing porous glass

03/21/13 - 20130068725 - Provided is a method of producing a porous glass, including selectively etching a phase-separated glass with an acid solution, in which the method allows a processing time to be shortened and suppresses gel-like silica from remaining and being deposited in pores of a porous portion. The method of producing a
Inventors: Kenji Takashima, Zuyi Zhang, Yoshinori Kotani

Method of producing glass

03/21/13 - 20130067957 - Provided a method of producing a glass having a silica skeleton with a phase-separated structure, particularly in the case of a phase-separated glass, by selectively removing a compositionally deviated layer on the surface of a phase-separated borosilicate glass. The method of producing a glass includes forming a glass body containing
Inventors: Zuyi Zhang, Yoshinori Kotani, Kenji Takashima

Method of producing porous glass

02/21/13 - 20130045853 - Provided is a method of producing a porous glass having a high strength by a safe, simple process that does not involve the use of any high-temperature heat treatment or acid treatment step. The method includes: mixing 4 wt % or more to 6.5 wt % or less of sodium
Inventors: Yoshinori Kotani, Zuyi Zhang, Kenji Takashima


### Kenji Takashima patent invention listings

The bibliographic references displayed about Kenji Takashima's patents are for a recent sample of Kenji Takashima's publicly published patent applications. The inventor/author may have additional bibliographic citations listed at the USPTO.gov. FreshPatents.com is not associated or affiliated in any way with the author/inventor or the United States Patent/Trademark Office but is providing this non-comprehensive sample listing for educational and research purposes using public bibliographic data published and disseminated from the United States Patent/Trademark Office public datafeed. This information is also available for free on the USPTO.gov website. If Kenji Takashima filed recent patent applications under another name, spelling or location then those applications could be listed on an alternate page. If no bibliographic references are listed here, it is possible there are no recent filings or there is a technical issue with the listing--in that case, we recommend doing a search on the USPTO.gov website.

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