US3584994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition of matter and method of treating internal combustion engine fuel gases
Assignee: Individual
•
Filing: 1969-07-31
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Granted: 1971-06-15
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Expires: 1989-07-31
Abstract
Abstract A METHOD OF TREATING EXHAUST GASES OF AN INTERNAL COMBUSTION ENGINE, SAID METHOD COMPRISING INJECTING INTO SAID EXHAUST GASES A BORON TRIFLUORIDE ETHERATE OR THE REACTION PRODUCT OF A BORON TRIFLUORIDE ETHERATE WITH AN AMINE.
Inventors
- 👤 Abraham M Herbsman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:54
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/02; B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/9404; B01D53/9409; C10L1/00; C10L1/10; C10L1/14; C10L1/30; C10L1/301; C10L1/303; C10L1/305; C10L1/306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |