Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Toshihiko Hijikata — 22 Patents

NINgk Insulators: 22 patents #138 of 2,083Top 7%
Nagoya, JP: #411 of 6,680 inventorsTop 7%
Overall (All Time): #189,202 of 4,157,543Top 5%
22 Patents All Time
Toshihiko Hijikata has been granted 22 US patents while listed as an inventor at Ngk Insulators. The first was granted in 1983 and the most recent in September 2010. Toshihiko Hijikata ranks #189,202 of 4,157,543 US inventors in our database (top 4.6%). Patent records list Toshihiko Hijikata in Nagoya, JP.

Patents per Year

Patents granted per year, 1983 to 2010Bar chart with a peak of 4 patents in 2006.peak 41983: 1 patents19831989: 2 patents1990: 1 patents19901992: 1 patents1993: 1 patents19931995: 1 patents1996: 1 patents19961998: 1 patents1999: 2 patents19992001: 1 patents2002: 1 patents20022003: 1 patents2005: 1 patents20052006: 4 patents2007: 1 patents20072010: 2 patents2010

Issued Patents All Time

Showing 1–22 of 22 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7802421 PM generating apparatus Satoru Yamada, Yukio Miyairi 2010-09-28 $239,000
7655195 Undulated-wall honeycomb structure and manufacturing method thereof Yukihito Ichikawa, Makoto Miyazaki 2010-02-02 $206,000
7163662 Canning structure and manufacturing method thereof Toshio Yamada 2007-01-16 $372,000
7087286 Honeycomb structure and assembly thereof 2006-08-08 $420,000
7078086 Honeycomb structure and assembly thereof 2006-07-18 $322,000
7052760 Honeycomb structural body and assembly thereof 2006-05-30 $328,000
7041359 Honeycomb structure and assembly thereof 2006-05-09 $378,000
6840083 Method and apparatus for detecting cracks in honeycomb structure 2005-01-11 $161,000
6521193 Ceramic honeycomb gas duct assembly and method of making the same Yukiharu MORITA 2003-02-18
6338826 Gas duct having honeycomb structure Toshio Yamada, Yukiharu MORITA 2002-01-15
6242071 Method for assembling ceramic honeycomb structure, and supporting member therefor Toshio Yamada, Mikio Tanaka 2001-06-05
5895700 Honeycomb structural body Toshio Yamada 1999-04-20
5866079 Ceramic honeycomb catalytic converter Minoru Machida, Toshio Yamada, Yukihito Ichikawa 1999-02-02
5782089 Honeycomb catalytic converter Minoru Machida, Masashi Yano 1998-07-21
5566545 Process and an apparatus for treating an exhaust gas, and a honeycomb structural exhaust gas filter Tetsuya Hiraoka, Kazuhiko Umehara 1996-10-22
5398541 Process and an apparatus for determining pressure losses of exhaust gas purification honeycomb structural bodies, by presumption, at respective points of time when honeycomb structural bodies are to be regenerated Satoru Yamada 1995-03-21
5188779 Production of ceramic honeycomb structural bodies Osamu Horikawa 1993-02-23
5102434 Method of inspecting a honeycomb structural body for purifying exhaust gases and apparatus used in the method Satoru Yamada, Ryouzi Horie 1992-04-07
4914065 Process for regnerating ceramic honeycomb filters by combustion Toshiaki Higuchi 1990-04-03
4857089 Ceramic honeycomb filter for purifying exhaust gases Jun Kitagawa, Kazuo Ishikawa 1989-08-15
4840827 Ceramic honeycomb structural bodies and method of producing the same Isao Mizutani, Takashi Harada 1989-06-20
4396664 Ceramic honeycomb structural body Shigeru Mochida, Masaru Kojima 1983-08-02