US2907787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of phosphono-thiono esters of 2-hydroxyethyl sulfides
Assignee: Individual
•
Filing: 1957-11-13
•
Granted: 1959-10-06
•
Expires: 1977-11-13
Abstract
No abstract record available.
Inventors
- 👤 Friedrich W Hoffmann
- 👤 Thomas R Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:51
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4071; C07F9/4075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
THE PROCESS OF PREPARING PHOSPHONOTHIO ESTERS WHICH COMPRISES TRANSESTERIFYING A DIALKYL PHOSPHONITE OF THE FIRST FORMULA FIG -01 WITH AN ALCOHOL OF THE SECOND FORMULA R3-S-CH2-CH2-OH THEREBY PRODUCING A COMPOUND OF THE THIRD FORMULA
Claim 2
Dependent Claim
34 words
THE PROCESS OF PREPARING PHOSPHONOTHIO ESTERS WHICH COMPRISES TRANSESTERIFYING A DIALKYL PHOSPHONITE OF THE FIRST FORMULA FIG -01 WITH AN ALCOHOL OF THE SECOND FORMULA R3-S-CH2-CH2-OH THEREBY PRODUCING A COMPOUND OF THE THIRD FORMULA
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) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |