Patent US2828358A successfully refreshed from Google Patents.
Patent US2072302A successfully refreshed from Google Patents.
US2072302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerized vinyl alcohol articles and processes of making same
Assignee: CHEMISCHE FORSCHUNGS GmbH
•
Filing: 1932-03-03
•
Granted: 1937-03-02
•
Expires: 1952-03-03
Abstract
No abstract record available.
Inventors
- 👤 Willy O Herrmann
- 👤 Haehnel Wolfram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:54
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/14; B; B29; B29C; B29C48/00; B29C48/022; B29C48/03; B29C48/04; B29C48/05; B29C48/06; B29C48/07; B29C48/08; B29C48/09; B29K; B29K2029/00; B29K2029/04; Y; Y10; Y10S; Y10S260/00; Y10S260/47; Y10S264/00; Y10S264/73; Y10S8/00; Y10S8/10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/2975
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) | 1940-03-01 | 1940-08-31 | 1941-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-03-01 | 1944-08-31 | 1945-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-03-01 | 1948-08-31 | 1949-03-02 | $7700.00 | Window Closed / Lapsed |