Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Masao Watari — 31 Patents

Sony: 14 patents #3,127 of 25,231Top 15%
Nec: 9 patents #1,544 of 14,502Top 15%
NCNippon Electric Co.: 3 patents #55 of 792Top 7%
Hitachi: 3 patents #10,718 of 28,497Top 40%
Tokyo, JP: #4,270 of 90,295 inventorsTop 5%
Overall (All Time): #115,823 of 4,157,543Top 3%
31 Patents All Time
Masao Watari has been granted 31 US patents while listed as an inventor at Sony. The first was granted in 1981 and the most recent in December 2000. Masao Watari ranks #115,823 of 4,157,543 US inventors in our database (top 2.8%). Patent records list Masao Watari in Tokyo, JP.

Patents per Year

Patents granted per year, 1981 to 2000Bar chart with a peak of 3 patents in 1986.peak 31981: 2 patents19811982: 1 patents1983: 1 patents19831986: 3 patents1987: 2 patents19871988: 3 patents1989: 3 patents19891990: 2 patents1991: 1 patents19911994: 2 patents1995: 1 patents19951996: 1 patents1997: 2 patents19971998: 3 patents1999: 3 patents19992000: 1 patents2000

Issued Patents All Time

Showing 1–25 of 31 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6161093 Information access system and recording medium Makoto Akabane, Tetsuya Kagami, Kazuo Ishii, Yusuke Iwahashi, Yasuhiko Kato +5 more 2000-12-12 $1,958,000
5991721 Apparatus and method for processing natural language and apparatus and method for speech recognition Yasuharu Asano, Makoto Akabane, Tetsuya Kagami, Kazuo Ishii, Miyuki Tanaka +3 more 1999-11-23 $654,000
5963892 Translation apparatus and method for facilitating speech input operation and obtaining correct translation thereof Miyuki Tanaka, Hiroaki Ogawa, Yasuhiko Kato, Tetsuya Kagami, Makoto Akabane +3 more 1999-10-05 $1,195,000
5903867 Information access system and recording system Makoto Akabane, Tetsuya Kagami, Kazuo Ishii, Yusuke Iwahashi, Yasuhiko Kato +5 more 1999-05-11 $593,000
5848389 Speech recognizing method and apparatus, and speech translating system Yasuharu Asano, Hiroaki Ogawa, Yasuhiko Kato, Tetsuya Kagami, Makoto Akabane +3 more 1998-12-08 $383,000
5796921 Mapping determination methods and data discrimination methods using the same Katsuki Minamino, Miyuki Tanaka, Kazuo Ishii, Yasuhiko Kato, Hiroaki Ogawa +3 more 1998-08-18 $423,000
5764853 Voice recognition device and method using a (GGM) Guaranteed Global minimum Mapping Kazuo Ishii, Yasuhiko Kato, Hiroaki Ogawa, Masanori Omote, Kazuo Watanabe +1 more 1998-06-09 $270,000
5704013 Map determination method and apparatus Kazuo Ishii, Yasuhiko Kato, Hiroaki Ogawa, Masanori Omote, Kazuo Watanabe +1 more 1997-12-30 $410,000
H1646 Speech recognition adapter for telephone system Yasuhiko Kato, Miyuki Tanaka 1997-05-06
5561722 Pattern matching method and pattern recognition apparatus Miyuki Tanaka, Yasuhiko Kato 1996-10-01 $399,000
5390280 Speech recognition apparatus Yasuhiko Kato, Miyuki Tanaka, Akihiko Fujinaka 1995-02-14 $116,000
5355432 Speech recognition system Miyuki Tanaka, Yasuhiko Kato 1994-10-11 $303,000
5353408 Noise suppressor Yasuhiko Kato, Makoto Akabane 1994-10-04 $361,000
5003601 Speech recognition method and apparatus thereof Yoichiro Sako, Makoto Akabane, Atsunobu Hiraiwa 1991-03-26 $144,000
4910782 Speaker verification system 1990-03-20 $16,000
4901352 Pattern matching method using restricted matching paths and apparatus therefor 1990-02-13 $33,000
4882756 Pattern matching system using dynamic programming 1989-11-21 $19,000
4839844 Orthogonal transformer and apparatus operational thereby 1989-06-13 $11,000
4837828 Pattern feature extracting system 1989-06-06 $16,000
4794645 Continuous speech recognition apparatus 1988-12-27 $21,000
4792976 Pattern recognizing device with pattern matching in slant parallelogrammic blocks of widths dependent on classified reference pattern lengths 1988-12-20 $42,000
4764972 Continuous characters recognition system Kazunaga Yoshida, Hiroshi Shimizu 1988-08-16 $28,000
4667341 Continuous speech recognition system 1987-05-19
4641342 Voice input system Takao Watanabe 1987-02-03 $647,000
4601054 Pattern distance calculating equipment Seibi Chiba 1986-07-15 $474,000