Patent US3068266A successfully refreshed from Google Patents.
US3068266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-(substituted-benzyl)-1, 3-propanedisulfonates
Assignee: Wyeth Holdings LLC
•
Filing: 1961-04-25
•
Granted: 1962-12-11
•
Expires: 1981-04-25
Abstract
No abstract record available.
Inventors
- 👤 Raymond G Wilkinson
- 👤 Thomas L Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:49
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/63; C07C309/64; C07C309/65; C07C309/66; C07C309/01; C07C309/28; C07C309/45; C07C309/52; C07C309/53; C07C309/54; C07C309/55; C07C43/00; C07C43/02; C07C43/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
US3013069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |