Patent US6049774A successfully refreshed from Google Patents.
Patent US1728935A successfully refreshed from Google Patents.
Patent US2194629A successfully refreshed from Google Patents.
US2194629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of light-resistant compositions
Assignee: Sherwin Williams Co
•
Filing: 1939-02-02
•
Granted: 1940-03-26
•
Expires: 1959-02-02
Abstract
No abstract record available.
Inventors
- 👤 Earl H Addison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:22
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/815; C; C08; C08K; C08K3/00; C08K3/34; C09; C09D; C09D101/00; C09D101/08; C09D101/16; C09D101/18
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) | 1943-03-26 | 1943-09-25 | 1944-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-03-26 | 1947-09-25 | 1948-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-03-26 | 1951-09-25 | 1952-03-26 | $7700.00 | Window Closed / Lapsed |