US2723256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric alkyl sulfate quaternary ammonium salts of the acrylyloxyethylamine type
Assignee: EIDP Inc
•
Filing: 1953-02-27
•
Granted: 1955-11-08
•
Expires: 1973-02-27
Abstract
No abstract record available.
Inventors
- 👤 Hayek Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:00
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/285; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/17; Y10S260/18; Y10S526/00; Y10S526/923
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
AS NEW ANTI-STATIC AGENTS FOR SYNTHETIC FIBERS, POLYMERIC SALTS HAVING AT LEAST 10 GROUPS PER MOLECULE OF THE FORMULA:
Claim 2
Dependent Claim
19 words
AS NEW ANTI-STATIC AGENTS FOR SYNTHETIC FIBERS, POLYMERIC SALTS HAVING AT LEAST 10 GROUPS PER MOLECULE OF THE FORMULA:
References Cited (Backward Citations)
US2138763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |