US2841605A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of heterocyclic dithiophosphoric esters
Assignee: Union Carbide Corp
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Filing: 1955-01-12
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Granted: 1958-07-01
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Expires: 1975-01-12
Abstract
No abstract record available.
Inventors
- 👤 William M Lanham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:49
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2633; C10L1/265; B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/014; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6571; C07F9/657109; C07F9/657118; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/167; C23F11/1673
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
12 words
AS NEW COMPOUNDS, HETEROCYCLIC PHOSPHORUS-CONTAINING ESTERS HAVING STRUCTURES CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
12 words
AS NEW COMPOUNDS, HETEROCYCLIC PHOSPHORUS-CONTAINING ESTERS HAVING STRUCTURES CORRESPONDING TO THE FORMULA
Claim 3
Dependent Claim
16 words
PROCESS FOR PRODUCING HETEROCYCLIC PHOSPHORUS-CONTAINING ESTERS, WHICH COMPRISES REACTING A HETEROCYCLIC PHOSPHORUS-CONTAINING ACID OF THE FORMULA
Claim 4
Dependent Claim
16 words
PROCESS FOR PRODUCING HETEROCYCLIC PHOSPHORUS-CONTAINING ESTERS, WHICH COMPRISES REACTING A HETEROCYCLIC PHOSPHORUS-CONTAINING ACID OF THE FORMULA
References Cited (Backward Citations)
US2791574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |