US2551931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polysiloxane grease and method of preparation
Assignee: Dow Silicones Corp
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Filing: 1948-09-29
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Granted: 1951-05-08
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Expires: 1968-09-29
Abstract
No abstract record available.
Inventors
- 👤 Chester C Currie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:17
CPC Classifications
C; C10; C10M; C10M7/00; C10M1/00; C10M1/08; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/125; C10M2207/129; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/042; C10M2229/043; C10M2229/044; C10M2229/05; C10M2229/051; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/08; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A GREASE CONSISTING ESSENTIALLY OF A LIQUID ORGANO POLYSILOXANE HAVING A DEGREE OF SUBSTITUTION OF FROM 1.9 TO 2.5 ORGANIC RADICALS PER SILICON ATOM, SAID RADICALS BEING SELECTED FROM THE GROUP CONSISTING OF METHYL, PHENYL, AND TOLYL RADICALS AND A MINOR AMOUNT OF A METALLIC SALT OF AN ALICYCLIC SUBSTITUTED FATTY ACID IN WHICH FATTY ACID THE CHAIN LENGHT IS FROM 2 TO 6 CARBON ATOMS, THE METAL OF SAID SALT BEING SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS, SAID SALT BEING PRESENT IN AMOUNT SUFFICIENT TO FORM A GREASE.
Claim 2
Dependent Claim
95 words
A GREASE CONSISTING ESSENTIALLY OF A LIQUID ORGANO POLYSILOXANE HAVING A DEGREE OF SUBSTITUTION OF FROM 1.9 TO 2.5 ORGANIC RADICALS PER SILICON ATOM, SAID RADICALS BEING SELECTED FROM THE GROUP CONSISTING OF METHYL, PHENYL, AND TOLYL RADICALS AND A MINOR AMOUNT OF A METALLIC SALT OF AN ALICYCLIC SUBSTITUTED FATTY ACID IN WHICH FATTY ACID THE CHAIN LENGHT IS FROM 2 TO 6 CARBON ATOMS, THE METAL OF SAID SALT BEING SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS, SAID SALT BEING PRESENT IN AMOUNT SUFFICIENT TO FORM A GREASE.
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) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |