US2501792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of disulfides
Assignee: Phillips Petroleum Co
•
Filing: 1947-09-22
•
Granted: 1950-03-28
•
Expires: 1967-09-22
Abstract
No abstract record available.
Inventors
- 👤 Fredrick M Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:20
CPC Classifications
C; C07; C07C; C07C321/00; Y; Y10; Y10S; Y10S165/00; Y10S165/228; Y10S165/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
THE COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
THE COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
5 words
THE COMPOUND OF THE FORMULA
Claim 4
Dependent Claim
5 words
THE COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2211990A
Cited
US2185008A
Cited
US2402685A
Cited
US2415851A
Cited
US2415852A
Cited
US2430661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |