US2651645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface active agents
Assignee: GAF Chemicals Corp
•
Filing: 1948-06-09
•
Granted: 1953-09-08
•
Expires: 1968-06-09
Abstract
No abstract record available.
Inventors
- 👤 James M Cross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:08
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/88; C07; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/13; C07C309/14; C07C309/15; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
COMPOUNDS OF THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
5 words
COMPOUNDS OF THE FOLLOWING FORMULA:
References Cited (Backward Citations)
US1932180A
Cited
US2045015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |