Inventor
David S. Watkins
Inventor
Coquitlam, CA
Overview
16→
Patents
1991–2003
Patent span
General tagging of new technological developments
Primary field (CPC Y)
Patents· 16 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Mprimary
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy27%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution27%
C01BNon-metallic elements15%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry12%
B01BBoiling4%
B01DSeparation4%
C10KPurifying or modifying the chemical composition of combustible gases containing carbon monoxide4%
Y02PClimate change mitigation technologies in the production or processing of goods4%
F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact2%
F28FDetails of heat-exchange and heat-transfer apparatus, of general application2%
PatentTitleYear
6,645,652'Fuel cell electric power generation system'20036,316,134'Fuel cell electric power generation system'20015,750,076'Apparatus for the two-stage selective oxidation of carbon monoxide in a hydrogen-containing gas mixture'19985,518,705'Method and apparatus for the two-stage selective oxidation of carbon monoxide in a hydrogen-containing gas mixture'19965,484,577'Catalytic hydrocarbon reformer with enhanced internal heat transfer mechanism'19965,456,889'Apparatus for the selective oxidation of carbon monoxide in a hydrogen-containing gas mixture'19955,441,819'Method and apparatus for removing water from electrochemical fuel cells by controlling the temperature and pressure of the reactant streams'19955,366,818'Solid polymer fuel cell systems incorporating water removal at the anode'19945,360,679'Hydrocarbon fueled solid polymer fuel cell electric power generation system'19945,316,747'Method and apparatus for the selective oxidation of carbon monoxide in a hydrogen-containing gas mixture'19945,284,718'Fuel cell membrane electrode and seal assembly'19945,260,143'Method and apparatus for removing water from electrochemical fuel cells'19935,209,906'Modular isothermal reactor'19935,200,278'Integrated fuel cell power generation system'19935,108,849'Fuel cell fluid flow field plate'19924,988,583'Novel fuel cell fluid flow field plate'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–2003Based in Coquitlam, CA· patent location history
1992–1993Patents assigned to UNITED KINGDOM GOVERNMENT (2)· patent assignee history
1993–1998Patents assigned to BALLARD POWER SYSTEMS (9)· patent assignee history
1995Patents assigned to CA MINISTER NAT DEFENCE (1)· patent assignee history
1996Patents assigned to BALLARD POWER SYSTEM INC (1)· patent assignee history
2001–2003Patents assigned to BALLARD GENERATION SYSTEMS INC (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BALLARD POWER SYSTEMS | 9 | 1993–1998 |
| BALLARD GENERATION SYSTEMS INC | 2 | 2001–2003 |
| UNITED KINGDOM GOVERNMENT | 2 | 1992–1993 |
| BALLARD POWER SYSTEM INC | 1 | 1996 |
| CA MINISTER NAT DEFENCE | 1 | 1995 |
Locations
| Location | Patents | Span |
|---|---|---|
| Coquitlam, CA | 16 | 1991–2003 |