US2811540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organopolysiloxane lubricants and their preparation
Assignee: General Electric Co
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Filing: 1955-06-24
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Granted: 1957-10-29
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Expires: 1975-06-24
Abstract
No abstract record available.
Inventors
- 👤 Glenn D Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:47
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/38
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
89 words
THE METHOD OF PREPARING AN ORGANOPOLYSILOXANE OF IMPROVED LUBRICATING PROPERTIES WHICH COMPRISES EFFECTING REACTION BETWEEN (A) A LIQUID CHLORINATED ORGANOPOLYSILOXANE CONTAINING AN AVERAGE OF 1.9 TO 2.67 ORGANIC GROUPS PER SILICON ATOM, SAID ORGANIC GROUPS BEING SELECTED FROM THE CLASS CONSISTING OF ALKYL AND ARYL RADICALS, AND AN AVERAGE OF AT LEAST ONE CHLOROALKYL RADICAL PER ORGANOPOLYSILOXANE MOLECULE AND (B) A COMPOUND HAVING THE FORMULA MSP(S)(OR)2 WHERE M IS AN ALKALI METAL RADICAL AND R IS A MEMBER SELECTED FROM THE CLASS CONSISTING OF ALKYL, ARYL, AND ARALKYL RADICALS.
Claim 2
Independent Claim
89 words
THE METHOD OF PREPARING AN ORGANOPOLYSILOXANE OF IMPROVED LUBRICATING PROPERTIES WHICH COMPRISES EFFECTING REACTION BETWEEN (A) A LIQUID CHLORINATED ORGANOPOLYSILOXANE CONTAINING AN AVERAGE OF 1.9 TO 2.67 ORGANIC GROUPS PER SILICON ATOM, SAID ORGANIC GROUPS BEING SELECTED FROM THE CLASS CONSISTING OF ALKYL AND ARYL RADICALS, AND AN AVERAGE OF AT LEAST ONE CHLOROALKYL RADICAL PER ORGANOPOLYSILOXANE MOLECULE AND (B) A COMPOUND HAVING THE FORMULA MSP(S)(OR)2 WHERE M IS AN ALKALI METAL RADICAL AND R IS A MEMBER SELECTED FROM THE CLASS CONSISTING OF ALKYL, ARYL, AND ARALKYL RADICALS.
Claim 3
Dependent Claim
10 words
THE ORGANOPOLYSILOXANE FLUID PREPARED BY THE METHOD OF CLAIM 1.
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) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |