US2452152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of forming polyvinyl formal coatings on textiles
Assignee: Celanese Corp
•
Filing: 1943-12-31
•
Granted: 1948-10-26
•
Expires: 1963-12-31
Abstract
No abstract record available.
Inventors
- 👤 Rooney James Henry
- 👤 Sharphouse John Henry
- 👤 Hawtin Philip Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:17
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/347; D06M2101/00; D06M2101/02; D06M2101/04; D06M2101/06; Y; Y10; Y10S; Y10S55/00; Y10S55/24; Y10T; Y10T442/00; Y10T442/20; Y10T442/2508; Y10T442/2516
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1963975A
Cited
US2083628A
Cited
US2036036A
Cited
GB430136A
Cited
GB496734A
Cited
US2173781A
Cited
US2332895A
Cited
US2360477A
Cited
US2407061A
Cited
US2370126A
Cited
US2387833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-26 | 1952-04-26 | 1952-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-26 | 1956-04-26 | 1956-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-26 | 1960-04-26 | 1960-10-26 | $7700.00 | Window Closed / Lapsed |