US3187031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenyl-substituted silalkylene compounds
Assignee: Dow Silicones Corp
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Filing: 1961-07-03
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Granted: 1965-06-01
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Expires: 1981-07-03
Abstract
No abstract record available.
Inventors
- 👤 Donald R Weyenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:03
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/48; C08G77/50; C08G77/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A COPOLYMERIC COMPOUND FREE OF SI-SI BONDING CONSISTING ESSENTIALLY OR ORGANOSILICON UNITS (1) SELECTED FROM THE GROUP CONSISTING OF UNITS OF THE FORMULAE-SIRM AND SIRM(OSIR2)N-IN WHICH EACH R IS SELECTED FROM THE GROUP CONSISTING OF MONOVALENT HYDROCARBON RADICALS FREE OF ALIPHATIC UNSATURATION AND FUNCTIONAL SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF THE HYDROGEN ATOM AND -OR'' RADICALS IN WHICH R'' IS A MONOVALENT HYDROCARBON RADICAL FREE OF ALIPHATIC UNSATURATION, EACH M IS A POSITIVE INTEGER FROM 2 TO 3 INCLUSIVE AND EACH N IS A POSITIVE INTEGER, AND UNITS (2) OF THE FORMULA
Claim 2
Dependent Claim
93 words
A COPOLYMERIC COMPOUND FREE OF SI-SI BONDING CONSISTING ESSENTIALLY OR ORGANOSILICON UNITS (1) SELECTED FROM THE GROUP CONSISTING OF UNITS OF THE FORMULAE-SIRM AND SIRM(OSIR2)N-IN WHICH EACH R IS SELECTED FROM THE GROUP CONSISTING OF MONOVALENT HYDROCARBON RADICALS FREE OF ALIPHATIC UNSATURATION AND FUNCTIONAL SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF THE HYDROGEN ATOM AND -OR'' RADICALS IN WHICH R'' IS A MONOVALENT HYDROCARBON RADICAL FREE OF ALIPHATIC UNSATURATION, EACH M IS A POSITIVE INTEGER FROM 2 TO 3 INCLUSIVE AND EACH N IS A POSITIVE INTEGER, AND UNITS (2) OF THE FORMULA
References Cited (Backward Citations)
US2160915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |