US2904570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbontin derivatives of trismercapto borate esters
Assignee: Primerica Inc
•
Filing: 1956-03-27
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Granted: 1959-09-15
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Expires: 1976-03-27
Abstract
No abstract record available.
Inventors
- 👤 Hugh E Ramsden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:46
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C08K5/58; C07; C07F; C07F5/00; C07F5/02; C07F5/04; C07F7/00; C07F7/22; C07F7/226
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
AS A NEW COMPOUND, A HYDROCARBONTIN DERIVATIVE OF A TRIS-MERCAPTO BORATE ESTER WHEREIN EACH TIN ATOM IS BONDED TO SULFUR.
Claim 2
Independent Claim
26 words
A METHOD OF PREPARING HYDROCARBONTIN TRIS-MERCAPTO BORATE ESTERS WHICH COMPRISES REACTING A HYDROCARBONTIN COMPOUND WITH A TRIS-MERCAPTO BORATE ESTER, AND RECOVERING SAID HYDROCARBONTIN TRIS-MERCAPTO BORATE ESTER.
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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |