Inventor
Keizo Konoki
Inventor
Tokyo, JP
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C01Bprimary
C01BNon-metallic elements22%
C07CAcyclic or carbocyclic compounds22%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry17%
C10GCracking hydrocarbon oils17%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form11%
B23KSoldering or unsoldering6%
Y10TTechnical subjects covered by former us classification6%
PatentTitleYear
4,510,988'Tube for thermal cracking or reforming hydrocarbon and manufacturing method thereof'19854,444,731'Tube for thermal cracking or reforming hydrocarbon'19844,444,732'Tube for thermal cracking or reforming of hydrocarbon'19844,334,096'Process for synthesizing urea'19824,231,961'Process for preparation of urea'19804,219,492'Process for manufacturing methanol'19804,218,397'Method for eliminating the explosibility of tail gas from the urea synthesis plant'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980–1985Patents assigned to TOYO ENGINEERING CORP (7)· patent assignee history
1980Patents assigned to MITSUI TOATSU CHEMICALS (1)· patent assignee history
1980–1984Based in Tokyo, JP· patent location history
1984–1985Patents assigned to KUBOTA LTD (3)· patent assignee history
1985Based in Takaidohigashi, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TOYO ENGINEERING CORP | 7 | 1980–1985 |
| KUBOTA LTD | 3 | 1984–1985 |
| MITSUI TOATSU CHEMICALS | 1 | 1980 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 6 | 1980–1984 |
| Takaidohigashi, JP | 1 | 1985 |