US2589675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of s-hydroxybenzyl o, odithiophosphoric acid triesters
Assignee: Wyeth Holdings LLC
•
Filing: 1949-11-29
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Granted: 1952-03-18
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Expires: 1969-11-29
Abstract
No abstract record available.
Inventors
- 👤 Elmer W Cook
- 👤 Philip H Moss
- 👤 Edwin O Hook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:01
CPC Classifications
A; A01; A01N; A01N57/00; A01N57/10; A01N57/14; C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/1653; C10; C10M; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M137/105; 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; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A METHOD OF PRODUCING AN S,S''-HYDROXYXYLYL DITHIOPHOSPHORIC ACID DIESTER WHICH COMPRISES REACTING TOGETHER TWO MOLECULAR PROPORTIONS OF AN O,O-DIESTER OF DITHIOPHOSPHORIC ACID, TWO MOLECULAR PROPORTIONS OF FORMALDEHYDE AND ONE MOLECULAR PROPORTION OF A PHENOL UNSUBSTITUTED IN AT LEAST ONE POSITION ORTHO OR PARA TO THE PHENOLIC HYDROXYL GROUP.
Claim 2
Independent Claim
48 words
A METHOD OF PRODUCING AN S,S''-HYDROXYXYLYL DITHIOPHOSPHORIC ACID DIESTER WHICH COMPRISES REACTING TOGETHER TWO MOLECULAR PROPORTIONS OF AN O,O-DIESTER OF DITHIOPHOSPHORIC ACID, TWO MOLECULAR PROPORTIONS OF FORMALDEHYDE AND ONE MOLECULAR PROPORTION OF A PHENOL UNSUBSTITUTED IN AT LEAST ONE POSITION ORTHO OR PARA TO THE PHENOLIC HYDROXYL GROUP.
References Cited (Backward Citations)
US2396839A
Cited
US2530339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |