US2880222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic dithiol derivatives
Assignee: Individual
•
Filing: 1957-02-06
•
Granted: 1959-03-31
•
Expires: 1977-02-06
Abstract
No abstract record available.
Inventors
- 👤 Ernst A H Friedheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:21
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/94; C07C; C07C323/00; C07F3/00; C07F3/10; C07F3/103; C07F9/90; C07F9/902; Y; Y10; Y10S; Y10S424/00; Y10S424/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
AS A NEW COMPOUND, THE DIMERCAPTO DERIVATIVE OF A METAL-CONTAINING COMPOUND, CORRESPONDING TO THE GENERAL FORMULA
Claim 2
Dependent Claim
16 words
AS A NEW COMPOUND, THE DIMERCAPTO DERIVATIVE OF A METAL-CONTAINING COMPOUND, CORRESPONDING TO THE GENERAL 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) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |