Patent US3454625A successfully refreshed from Google Patents.
US3454625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel quaternary ammonium carbamate antistatic agents
Assignee: GAF Corp
•
Filing: 1967-04-03
•
Granted: 1969-07-08
•
Expires: 1987-04-03
Abstract
No abstract record available.
Inventors
- 👤 Fred S Eiseman Jr
- 👤 Leslie M Schenck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:28
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/46; D06M13/461; C; C09; C09K; C09K3/00; C09K3/16; H; H05; H05F; H05F1/00; H05F1/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |