US2891979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aryl sulfimides
Assignee: Harshaw Chemical Co
•
Filing: 1957-07-01
•
Granted: 1959-06-23
•
Expires: 1977-07-01
Abstract
No abstract record available.
Inventors
- 👤 Harry E Ford
- 👤 Jr Wilbur J Shenk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:43
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
AS NEW COMPOSITIONS OF MATTER COMPOUNDS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
10 words
AS NEW COMPOSITIONS OF MATTER COMPOUNDS OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2309870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-22 | 1962-12-22 | 1963-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-22 | 1966-12-22 | 1967-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-22 | 1970-12-22 | 1971-06-23 | $7700.00 | Window Closed / Lapsed |