US1950279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing a water-repellent coating on paper or similar material
Assignee: Imperial Paper and Color Corp
•
Filing: 1933-06-15
•
Granted: 1934-03-06
•
Expires: 1953-06-15
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Van Wirt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:43
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/21; D21H17/22; D21H19/00; D21H19/36; D21H19/44; D21H19/50; D21H19/66; D21H27/00; D21H27/18; D21H27/20; D21H21/00; D21H21/14; D21H21/16; D21H23/00; D21H23/02; D21H23/22; D21H23/50
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1937-03-05 | 1937-09-04 | 1938-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-03-05 | 1941-09-04 | 1942-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-03-05 | 1945-09-04 | 1946-03-06 | $7700.00 | Window Closed / Lapsed |