US2903382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of fabric with alkenylsuccinic acids and anhydrides to impart water repellency
Assignee: Armour and Co
•
Filing: 1958-06-23
•
Granted: 1959-09-08
•
Expires: 1978-06-23
Abstract
No abstract record available.
Inventors
- 👤 Robert J Berls
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:52
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/184; D06M13/207; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A WATER-REPELLENT CELLULOSIC FABRIC IMPREGNATED WITH AT LEAST ABOUT .75% BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
21 words
A WATER-REPELLENT CELLULOSIC FABRIC IMPREGNATED WITH AT LEAST ABOUT .75% BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF
References Cited (Backward Citations)
US2381852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |