Inventor
Hiroyuki Uhara
Inventor
Tatsuno-machi, JP
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds38%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry23%
F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact15%
F28FDetails of heat-exchange and heat-transfer apparatus, of general application15%
C07DHeterocyclic compounds8%
PatentTitleYear
7,253,309'Method for production of methacrylic acid'20076,699,999'Process for producing pyromellitic anhydride'20045,264,627'Method for production of methacrylic acid'19934,954,650'Method for production of methacrylic acid'19904,256,783'Catalytic vapor phase oxidation reactor apparatus'19814,203,906'Process for catalytic vapor phase oxidation'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980–2004Patents assigned to NIPPON CATALYTIC CHEM IND (4)· patent assignee history
1980–2007Based in Tatsuno-machi, JP· patent location history
1981Patents assigned to NIPPON SKOKUBEI KAGAKU KOGYO C (1)· patent assignee history
1990Patents assigned to SUMITOMO CHEMICAL CO (1)· patent assignee history
2007Patents assigned to SUMITOMO CHENICAL CO (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NIPPON CATALYTIC CHEM IND | 4 | 1980–2004 |
| NIPPON SKOKUBEI KAGAKU KOGYO C | 1 | 1981 |
| SUMITOMO CHEMICAL CO | 1 | 1990 |
| SUMITOMO CHENICAL CO | 1 | 2007 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tatsuno-machi, JP | 6 | 1980–2007 |