US2255082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capillary active compounds and process of preparing them
Assignee: GAF Chemicals Corp
•
Filing: 1939-01-14
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Granted: 1941-09-09
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Expires: 1959-01-14
Abstract
No abstract record available.
Inventors
- 👤 Orthner Ludwig
- 👤 Platz Carl
- 👤 Keller Hans
- 👤 Sonke Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:27
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/13; C07C309/14; C07C309/15; C07C309/28; C07C309/45; C07C309/51
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) | 1944-09-08 | 1945-03-10 | 1945-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-09-08 | 1949-03-10 | 1949-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-09-08 | 1953-03-10 | 1953-09-09 | $7700.00 | Window Closed / Lapsed |