Patent US3793523A successfully refreshed from Google Patents.
Patent US2313573A successfully refreshed from Google Patents.
US2313573A
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Capillary active compounds and process of preparing them
Assignee: GAF Chemicals Corp
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Filing: 1939-01-14
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Granted: 1943-03-09
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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
2026-10-27 08:20
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/79; C07D213/80; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/04; Y10S516/06
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) | 1946-03-08 | 1946-09-07 | 1947-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-03-08 | 1950-09-07 | 1951-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-03-08 | 1954-09-07 | 1955-03-09 | $7700.00 | Window Closed / Lapsed |