Patent US3209020A successfully refreshed from Google Patents.
US3209020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thiophosphonic acid esters containing at least one s-alkyl group
Assignee: Bayer AG
•
Filing: 1961-09-29
•
Granted: 1965-09-28
•
Expires: 1981-09-29
Abstract
No abstract record available.
Inventors
- 👤 Schrader Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:04
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/48; A; A01; A01N; A01N57/00; A01N57/18; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4071; C07F9/4084
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)
US2121662A
Cited
US3113005A
Cited
US2881201A
Cited
US2916509A
Cited
DE1078124B
Cited
US3056825A
Cited
US2967884A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |