Inventor
Gerard Dupuis
Inventor
Walnut Creek, CA, US
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds21%
F25JLiquefaction, solidification or separation of gases or gaseous or liquefied gaseous mixtures by pressure and cold treatment or by bringing them into the supercritical state21%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
C01BNon-metallic elements8%
C10GCracking hydrocarbon oils8%
Y02PClimate change mitigation technologies in the production or processing of goods8%
C03CChemical composition of glasses, glazes or vitreous enamels4%
C09KMaterials for miscellaneous applications, not provided for elsewhere4%
C23GCleaning or de-greasing of metallic material by chemical methods other than electrolysis4%
F26BDrying solid materials or objects by removing liquid therefrom4%
PatentTitleYear
6,141,988'Process for recovering olefins'20005,979,178'Process for recovering olefins from cracked gases'19995,505,048'Method and apparatus for the separation of C.sub.4 hydrocarbons from gaseous mixtures containing the same'19965,414,188'Method and apparatus for the separation of C.sub.4 hydrocarbons from gaseous mixtures containing the same'19955,329,774'Method and apparatus for separating C.sub.4 hydrocarbons from a gaseous mixture'19944,594,177'Surface demoisturizing composition and use thereof'1986Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1986Patents assigned to DUPUIS GERARD (1)· patent assignee history
1986Patents assigned to LANTZ ANDRE (1)· patent assignee history
1986Based in Puteaux, FR· patent location history
1994Patents assigned to LIQUID AIR ENG CORP (1)· patent assignee history
1994–1995Based in Pleasant Hill, CA, US· patent location history
1996–2000Based in Walnut Creek, CA, US· patent location history
1999–2000Patents assigned to AIR LIQUIDE (2)· patent assignee history
1999–2000Patents assigned to AIR LIQUIDE AMERICAN (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| AIR LIQUIDE | 2 | 1999–2000 |
| AIR LIQUIDE AMERICAN | 2 | 1999–2000 |
| DUPUIS GERARDself | 1 | 1986 |
| LANTZ ANDRE | 1 | 1986 |
| LIQUID AIR ENG CORP | 1 | 1994 |
Locations
| Location | Patents | Span |
|---|---|---|
| Walnut Creek, California, US | 3 | 1996–2000 |
| Pleasant Hill, California, US | 2 | 1994–1995 |
| Puteaux, FR | 1 | 1986 |