US2577966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialkyldithiophosphoric acid formaldehyde condensation products
Assignee: Wyeth Holdings LLC
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Filing: 1949-08-18
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Granted: 1951-12-11
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Expires: 1969-08-18
Abstract
No abstract record available.
Inventors
- 👤 Edwin O Hook
- 👤 Philip H Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:42
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0071; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C10; C10M; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M137/105; C10M2207/00; C10M2207/10; C10M2207/16; C10M2207/40; C10M2207/404; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2223/047; C10M2225/00; C10M2225/02; C10N; C10N2010/00; C10N2010/14; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/135; C10N2040/20; C10N2040/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
THE CONDENSATION PRODUCT OF ONE MOL OF FORMALDEHYDE WITH FROM ONE TWO TWO MOLES OF AN O,O-DIALKYLDITHIOPHOSPHORIC ACID ADIESTER.
Claim 2
Dependent Claim
19 words
THE CONDENSATION PRODUCT OF ONE MOL OF FORMALDEHYDE WITH FROM ONE TWO TWO MOLES OF AN O,O-DIALKYLDITHIOPHOSPHORIC ACID ADIESTER.
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) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |