US2594875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of neutralizing and spray drying a solution of organic sulfonic acid
Assignee: California Research LLC
•
Filing: 1948-04-30
•
Granted: 1952-04-29
•
Expires: 1968-04-30
Abstract
No abstract record available.
Inventors
- 👤 Daniel H Condit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:11
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/42; Y; Y10; Y10S; Y10S159/00; Y10S159/14; Y10S516/00; Y10S516/01; Y10S516/02; Y10S516/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1737792A
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US2187244A
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US2316670A
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US2325320A
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US2422128A
Cited
US2477383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |