US2926158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfur-containing products and their preparation
Assignee: Shell Development Co
•
Filing: 1955-11-21
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Granted: 1960-02-23
•
Expires: 1975-11-21
Abstract
No abstract record available.
Inventors
- 👤 Robert W Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:55
CPC Classifications
C; C07; C07D; C07D513/00; C07D513/02; C07D513/04; C08; C08G; C08G75/00; C08G75/02; C08G75/18; C08G75/20; C09; C09B; C09B23/00; C09B23/02; C09B23/10; C09B23/14; C09B23/145; C09B23/146
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
SULFUR-CONTAINING PRODUCTS OF THE FORMULA
Claim 2
Dependent Claim
5 words
SULFUR-CONTAINING PRODUCTS OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |