US2453690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing polyvalentmetal hydrocarbon sulfonate
Assignee: Individual
•
Filing: 1944-10-23
•
Granted: 1948-11-16
•
Expires: 1964-10-23
Abstract
No abstract record available.
Inventors
- 👤 Ulrie B Bray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:12
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04; C07; C07C; C07C309/00; C07C309/01; C07C309/62; C10M; C10M135/00; C10M135/08; C10M135/10; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2219/00; C10M2219/02; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/047; C10N; C10N2010/00; C10N2010/04; C10N2010/08; C10N2010/14; C10N2010/16; C10N2030/00; C10N2030/12; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-16 | 1952-05-17 | 1952-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-16 | 1956-05-17 | 1956-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-16 | 1960-05-17 | 1960-11-16 | $7700.00 | Window Closed / Lapsed |