US2937995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature lubricating oil composition containing a silicon-tin-containing compound
Assignee: General Electric Co
•
Filing: 1957-12-11
•
Granted: 1960-05-24
•
Expires: 1977-12-11
Abstract
No abstract record available.
Inventors
- 👤 Norman G Holdstock
- 👤 Jr Edgar D Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:05
CPC Classifications
C; C10; C10M; C10M3/00; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0836; C07F7/22; C07F7/2224; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C10M2227/00; C10M2227/04; C10M2227/06; C10M2227/08; C10M2227/083; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/042; C10M2229/043; C10M2229/044; C10M2229/05; C10M2229/051; C10N; C10N2010/00; C10N2010/08; C10N2020/00; C10N2020/01; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/08; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A LUBRICATING COMPOSITION FOR USE UNDER HEAVY LOAD AT ELEVATED TEMPERATURES CONSISTING ESSENTIALLY OF (1) A LIQUID POLYMERIC ORGANOPOLYSILOXANE HAVING AN AVERAGE OF FROM ABOUT 1.98 TO 2.25 ORGANIC GROUPS PER SILICON ATOM, AND (2) FROM ABOUT 1 TO 10% BY WEIGHT, BASED ON THE WEIGHT OF (1) OF A SILICON-TIN-CONTAINING COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
55 words
A LUBRICATING COMPOSITION FOR USE UNDER HEAVY LOAD AT ELEVATED TEMPERATURES CONSISTING ESSENTIALLY OF (1) A LIQUID POLYMERIC ORGANOPOLYSILOXANE HAVING AN AVERAGE OF FROM ABOUT 1.98 TO 2.25 ORGANIC GROUPS PER SILICON ATOM, AND (2) FROM ABOUT 1 TO 10% BY WEIGHT, BASED ON THE WEIGHT OF (1) OF A SILICON-TIN-CONTAINING COMPOUND OF THE FORMULA
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) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |