US2991160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine exhaust gas purifying system
Assignee: California Research LLC
•
Filing: 1958-03-19
•
Granted: 1961-07-04
•
Expires: 1978-03-19
Abstract
No abstract record available.
Inventors
- 👤 William H Claussen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:57
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/30; F01N3/18; F01N3/20; F01N3/2053; F01N2410/00; F01N2410/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
AN EXHAUST GAS PURIGYING SYSTEM FOR AN INTERNAL COMBUSTION ENGINE, COMPRISING A CATALYTIC REACTION CHAMBER HAVING AN INLET AND AN OUTLET FOR EXHAUST GAS, ANNULAR INDIRECT HEAT-EXCHANGE MEANS SURROUNDING SAID CATALYTIC REACTION CHAMBER FOR INCREASING THE TEMPERATURE OF SAID CATALYST, GAS BY-PASS MEANS FOR PASSING GAS FROM SAID INLET THROUGH SAID ANNULAR HEAT-EXCHANGE MEANS TO SAID OUTLET WITHOUT PASSING THROUGH SAID CHAMBER, MEANS FOR CONTINUOUSLY SUPPLYING AIR INTO SAID CATALYST CHAMBER,
Claim 2
Dependent Claim
71 words
AN EXHAUST GAS PURIGYING SYSTEM FOR AN INTERNAL COMBUSTION ENGINE, COMPRISING A CATALYTIC REACTION CHAMBER HAVING AN INLET AND AN OUTLET FOR EXHAUST GAS, ANNULAR INDIRECT HEAT-EXCHANGE MEANS SURROUNDING SAID CATALYTIC REACTION CHAMBER FOR INCREASING THE TEMPERATURE OF SAID CATALYST, GAS BY-PASS MEANS FOR PASSING GAS FROM SAID INLET THROUGH SAID ANNULAR HEAT-EXCHANGE MEANS TO SAID OUTLET WITHOUT PASSING THROUGH SAID CHAMBER, MEANS FOR CONTINUOUSLY SUPPLYING AIR INTO SAID CATALYST CHAMBER,
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |