US3748829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adsorbing evaporative emission during fueling of automotive vehicles
Assignee: Calgon Carbon Corp
•
Filing: 1970-07-02
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Granted: 1973-07-31
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Expires: 1990-07-02
Abstract
Abstract Fuel vapors which are normally lost in fueling automotive vehicles and from fuel storage tanks are adsorbed on an adsorbent, preferably activated carbon, and are subsequently recovered therefrom.
Inventors
- 👤 R Joyce
- 👤 G Stoneburner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:59
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/035; B60K15/03504; B60K15/04; B60K2015/0458; B60K2015/048
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
14 words
Method as in claim 1 wherein the gasoline vapor adsorbent material is activated carbon.
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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |