Patent US2881201A successfully refreshed from Google Patents.
US2881201A
Expired / Lapsed
US
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Substituted mercaptoalkyl esters of phosphoric acids and their derivatives
Assignee: Bayer AG
•
Filing: 1955-12-01
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Granted: 1959-04-07
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Expires: 1975-12-01
Abstract
No abstract record available.
Inventors
- 👤 Schrader Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:52
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4071; C07F9/4075; C07F9/06; C07F9/08; C07F9/09; C07F9/091; C07F9/16; C07F9/165; C07F9/1651; C07F9/22; C07F9/24; C07F9/2404; C07F9/2408; C07F9/30; C07F9/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
PHOSPHRUS ACID DERIVATIVES OF THE FORMULA
Claim 2
Dependent Claim
6 words
PHOSPHRUS ACID DERIVATIVES OF THE FORMULA
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |