Patent US2726254A successfully refreshed from Google Patents.
US2726254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tin mercaptides
Assignee: Individual
•
Filing: 1952-05-06
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Granted: 1955-12-06
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Expires: 1972-05-06
Abstract
No abstract record available.
Inventors
- 👤 William E Leistner
- 👤 Olga H Knoepke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:20
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C08K5/58; C07; C07F; C07F7/00; C07F7/22; C07F7/226
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
AS A COMPOSITION OF MATTER A DIMERCAPTIDE OF THE TYPE FORMULA
Claim 2
Dependent Claim
11 words
AS A COMPOSITION OF MATTER A DIMERCAPTIDE OF THE TYPE 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) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |