US1795491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonic lubricating material and process of making the same
Assignee: Standard Oil Development Co
•
Filing: 1924-09-08
•
Granted: 1931-03-10
•
Expires: 1944-09-08
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:49
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/08; C10M135/10; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2219/00; C10M2219/04; C10M2219/044; C10N; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/04; Y10S516/924; Y10S516/928
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1934-03-09 | 1934-09-08 | 1935-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-03-09 | 1938-09-08 | 1939-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-03-09 | 1942-09-08 | 1943-03-10 | $7700.00 | Window Closed / Lapsed |