US2724725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of phosphinothioic halides from phosphinodithioic acids and hydrogen halides
Assignee: Lubrizol Corp
•
Filing: 1954-01-26
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Granted: 1955-11-22
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Expires: 1974-01-26
Abstract
No abstract record available.
Inventors
- 👤 Willis G Craig
- 👤 William A Higgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:41
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/30; C07F9/34; Y; Y10; Y10S; Y10S206/00; Y10S206/819
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
THE METHOD FOR PREPARING PHOSPHINOTHIOIC ACID HALIDES HAVING THE STRUCTURE:
Claim 2
Independent Claim
10 words
THE METHOD FOR PREPARING PHOSPHINOTHIOIC ACID HALIDES HAVING THE STRUCTURE:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |