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Patent US2195067A successfully refreshed from Google Patents.
US2195067A
Expired / Lapsed
US
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Wool dyestuffs of the anthraquinone series
Assignee: GAF Chemicals Corp
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Filing: 1938-07-22
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Granted: 1940-03-26
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Expires: 1958-07-22
Abstract
No abstract record available.
Inventors
- 👤 Weinand Klaus
- 👤 Bamberger Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:57
CPC Classifications
C; C09; C09B; C09B5/00; C09B5/02; C09B5/14; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/32; C09B1/34; C09B1/346; C09B5/16
Claims Analysis
Total Claims: 0
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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 |