US3197433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optically clear organopolysiloxane resins
Assignee: General Electric Co
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Filing: 1962-07-02
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Granted: 1965-07-27
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Expires: 1982-07-02
Abstract
No abstract record available.
Inventors
- 👤 Harry F Lamoreaux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:33
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/48; C08G77/50; C07; C07F; C07F7/00; C07F7/02; C07F7/21; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
AN ORGANOPOLYSILOXANE RESIN COMPRISING A FIRST CLASS OF ORGANOCYCLOTETRASILOXANE UNITS, THERE BEING PRESENT IN SAID RESIN SUBSTANTIALLY TWICE THE NUMBER OF SAID SECOND CLASS AS OF SAID FIRST CLASS, WITH SUBSTANTIALLY EVERY UNIT OF SAID FIRST CLASS BEING ATTACHED TO FOUR LUNITS OF SAID SECOND CLASS THROUGH A SILICON-BONDED ALKYLENE RADICAL OF AT LEAST TWO CARBON ATOMS, WITH SUBSTANTIALLY EVERY UNIT OF SAID SECOND CLASS BEING ATTACHED THROUGH ITS 1- AND 5-SILICON ATOMS, RESPECTIVELY, TO TWO AND ONLY TWO UNITS OF SAID FIRST CLASS THROUGH SAID SILICON-BONDED ALKYLENE RADICAL, SUBSTANTIALLY ALL OF THE VALENCES OF SILICON OTHER THAN THE VALENCES SATISFIED BY OXYGEN IN THE CYCLOTETRASILOXANE RINGS AND THE VALENCES SATISFIED BY SILICON-BONDED ALKYLENE RADICALS BEING SATISFIED BY MONOVALENT HYDROCARBON RADICALS FREE OF ALIPHATIC UNSATURATION.
Claim 2
Dependent Claim
125 words
AN ORGANOPOLYSILOXANE RESIN COMPRISING A FIRST CLASS OF ORGANOCYCLOTETRASILOXANE UNITS, THERE BEING PRESENT IN SAID RESIN SUBSTANTIALLY TWICE THE NUMBER OF SAID SECOND CLASS AS OF SAID FIRST CLASS, WITH SUBSTANTIALLY EVERY UNIT OF SAID FIRST CLASS BEING ATTACHED TO FOUR LUNITS OF SAID SECOND CLASS THROUGH A SILICON-BONDED ALKYLENE RADICAL OF AT LEAST TWO CARBON ATOMS, WITH SUBSTANTIALLY EVERY UNIT OF SAID SECOND CLASS BEING ATTACHED THROUGH ITS 1- AND 5-SILICON ATOMS, RESPECTIVELY, TO TWO AND ONLY TWO UNITS OF SAID FIRST CLASS THROUGH SAID SILICON-BONDED ALKYLENE RADICAL, SUBSTANTIALLY ALL OF THE VALENCES OF SILICON OTHER THAN THE VALENCES SATISFIED BY OXYGEN IN THE CYCLOTETRASILOXANE RINGS AND THE VALENCES SATISFIED BY SILICON-BONDED ALKYLENE RADICALS BEING SATISFIED BY MONOVALENT HYDROCARBON RADICALS FREE OF ALIPHATIC UNSATURATION.
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |