Inventor
Daniel P. Hagewiesche
Inventor
Oakland, CA, US
Overview
Patents· 14 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C10Gprimary
C10GCracking hydrocarbon oils22%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry17%
C07CAcyclic or carbocyclic compounds14%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%
Y02PClimate change mitigation technologies in the production or processing of goods8%
C01BNon-metallic elements5%
C23CCoating metallic material5%
F28FDetails of heat-exchange and heat-transfer apparatus, of general application5%
C22BProduction and refining of metals3%
C23FNon-mechanical removal of metallic material from surface3%
PatentTitleYear
8,563,794'Extending the life of an aromatization catalyst'20138,288,603'Extending the life of an aromatization catalyst'20127,868,217'Extending the life of an aromatization catalyst'2011RE038532'Hydrodealkylation processes'20046,602,483'Increasing production in hydrocarbon conversion processes'20036,551,660'Method for removing reactive metal from a reactor system'20036,548,030'Apparatus for hydrocarbon processing'20036,419,986'Method for removing reactive metal from a reactor system'20026,274,113'Increasing production in hydrocarbon conversion processes'20016,139,909'Using hydrocarbon streams to prepare a metallic protective layer'20005,866,743'Hydrodealkylation processes'19995,863,418'Low-sulfur reforming process'19995,849,969'Hydrodealkylation processes'19985,658,452'Increasing production in hydrocarbon conversion processes'1997Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1997–2000Patents assigned to CHEVRON CHEM CO (5)· patent assignee history
1997–2004Based in Oakland, CA, US· patent location history
2001–2013Patents assigned to CHEVRON PHILLIPS CHEMICAL CO (9)· patent assignee history
2011–2013Based in Carlsbad, CA, US· patent location history
2012–2013Patents assigned to BROWN SCOTT H (2)· patent assignee history
2012–2013Patents assigned to CHEUNG TIN-TACK PETER (2)· patent assignee history
2012–2013Patents assigned to HAGEWIESCHE DANIEL P (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CHEVRON PHILLIPS CHEMICAL CO | 9 | 2001–2013 |
| CHEVRON CHEM CO | 5 | 1997–2000 |
| BROWN SCOTT H | 2 | 2012–2013 |
| CHEUNG TIN-TACK PETER | 2 | 2012–2013 |
| HAGEWIESCHE DANIEL Pself | 2 | 2012–2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Oakland, California, US | 11 | 1997–2004 |
| Carlsbad, California, US | 3 | 2011–2013 |