Koizumi; Ken

Patent Applications and Registrations

Patent applications and USPTO patent grants for Koizumi; Ken.The latest application filed is for "production of optical glass fibers".

Company Profile

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Koizumi; Ken - Kawanishi JP
Koizumi; Ken - Itami JA
Koizumi; Ken - Hyogo JA
Koizumi; Ken - Takarazuka JA
Koizumi; Ken - Itami-shi Hyogo-ken JA
Koizumi; Ken - Hyogo-ken JA
Koizumi; Ken - Kobe-shi JA

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Production of optical glass fibers Grant 4,145,200 - Yamazaki , et al. March 20, 1	1979-03-20
Light-conducting glass structures Grant 3,941,474 - Kitano , et al. March 2, 1	1976-03-02
Method of producing light-conducting glass structure Grant 3,923,486 - Kitano , et al. December 2, 1	1975-12-02
Process for exchanging alkali ions for thallium ions in a glass fiber Grant 3,894,857 - Uchida , et al. July 15, 1	1975-07-15
Ion Exchange Process For Manufacturing Integrated Optical Circuits Grant 3,857,689 - Koizumi , et al. December 31, 1	1974-12-31
Continuous Production Of Light-conducting Glass Filaments With Refractive Index Gradient Grant 3,836,347 - Ono , et al. September 17, 1	1974-09-17
Method For Manufacturing Optical Integrated Circuits Utilizing An External Electric Field Grant 3,836,348 - Sumimoto , et al. September 17, 1	1974-09-17
Production Of Light-conducting Glass Structures With Index Gradient Grant 3,830,640 - Kitano , et al. August 20, 1	1974-08-20
Gradient Index Light Conductor Grant 3,801,181 - Kitano , et al. April 2, 1	1974-04-02
Continuous Production Of Light-conducting Glass Fibers With Ion Diffusion Grant 3,791,806 - Koizumi , et al. February 12, 1	1974-02-12
Optical Image Transmitting Structure Grant 3,753,607 - Kitano , et al. August 21, 1	1973-08-21
Image Transmitter Formed Of A Plurality Of Graded Index Fibers In Bundled Configuration Grant 3,658,407 - Kitano , et al. April 25, 1	1972-04-25
Light-conducting Glass Structure Having A Peripheral Light-absorbent Layer Grant 3,650,598 - Kitano , et al. March 21, 1	1972-03-21
Faraday-effect Element Grant 3,633,992 - Uchida , et al. January 11, 1	1972-01-11

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