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Ryuichiro Sato — 35 Patents

SCSei Optifrontier Co.: 18 patents #1 of 82Top 2%

Sumitomo Electric Industries: 9 patents #3,076 of 21,551Top 15%

SCSumitomo Electric Optifrontier Co.: 7 patents #2 of 57Top 4%

MKMeiji Seika Kaisha: 1 patents #353 of 752Top 50%

Yokohama, JP: #2,436 of 49,234 inventorsTop 5%

Overall (All Time): #96,288 of 4,157,543Top 3%

35 Patents All Time

Ryuichiro Sato has been granted 35 US patents while listed as an inventor at Sei Optifrontier Co.. The first was granted in 1995 and the most recent in September 2025. Ryuichiro Sato ranks #96,288 of 4,157,543 US inventors in our database (top 2.3%). Patent records list Ryuichiro Sato in Yokohama, JP.

Patents per Year

Issued Patents All Time

Showing 1–25 of 35 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
D1092411	Optical fiber alignment member	Shohei Nakamura, Yuta Ryono	2025-09-09
D1092581	Optical fiber fusion splicer	Tomoyoshi Sasaki, Kazufumi Joko	2025-09-09
12384598	Housing case for fusion splicer and fusion splicer set	Yuta Ryono, Kazufumi Joko, Tomoyoshi Sasaki	2025-08-12
D1073757	Fusion splicer working tray	Yuta Ryono, Kazufumi Joko, Tomoyoshi Sasaki	2025-05-06
12276841	Optical fiber fusion splicing method and fusion splicing device	Hiroki Akiyama, Makoto Miyamori, Kazuyoshi OOKI, Ryosuke Meo, Hiroshi Takayanagi	2025-04-15
11435529	Optical fiber holder	Hiroshi Takayanagi, Hiroshi Nakamura	2022-09-06
11327230	Optical fiber holder	Keitarou Koguchi, Shinsuke KURINO, Masataka Ishizuka	2022-05-10
11237330	Optical fiber alignment jig, optical fiber fusion splicer equipped with optical fiber alignment jig, and method for aligning optical fiber	—	2022-02-01
11204465	Optical fiber holder and fusion-splicing apparatus including optical fiber holder	—	2021-12-21
11181692	Reinforcing apparatus for optical fiber fusion-splicing part and fusion splicer provided with the same	Ryosuke Meo, Hiroshi Takayanagi	2021-11-23
10921527	Optical fiber holder	Hiroshi Takayanagi, Hiroshi Nakamura	2021-02-16
D837273	Optical fiber fusion splicer	Hiroshi Takayanagi, Makoto Miyamori	2019-01-01
10054742	Optical fiber fusion splicer and optical fiber fusion splicing method	Toshihiko Homma	2018-08-21
D792493	Electrode bar for use in an optical fiber fusion splicer	Toshihiko Homma	2017-07-18
9488781	Optical fiber holder and optical fiber fusion-connecting device	Hiroshi Takayanagi, Yasuhiro Sakamoto	2016-11-08
D759138	Optical fiber fusion splicer	Hiroyasu Toyooka, Kensuke Ito	2016-06-14
9341777	Optical fiber fusion splicer	Hiroshi Takayanagi, Makoto Miyamori	2016-05-17
9235005	Method of fusion-splicing optical fibers and fusion splicer	Hiroyasu Toyooka, Hiroshi Takayanagi	2016-01-12
D746885	Optical fiber fusion splicer	Hiroyasu Toyooka, Kensuke Ito	2016-01-05
9146354	Fusion splicer	—	2015-09-29
9052487	Optical fiber holder	—	2015-06-09
8992101	Heating device for optical-fiber reinforcement, and optical-fiber fusion splicing device	Masakazu Fukuda, Hisao Yui, Hiroshi Takayanagi	2015-03-31
8950955	Heating device for optical-fiber reinforcement, and optical-fiber fusion splicing device	Masakazu Fukuda, Hisao Yui, Hiroshi Takayanagi	2015-02-10
8939660	Optical fiber fusion splicer	—	2015-01-27
D720785	Electrode bar for optical fiber fusion splicer	—	2015-01-06