US2696480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric organopolysiloxanes containing phenylene and silane linked silicon atoms
Assignee: Dow Silicones Corp
•
Filing: 1951-10-20
•
Granted: 1954-12-07
•
Expires: 1971-10-20
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Gordon
- 👤 Harold A Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:12
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
THE PROCESS COMPRISING REACTING IN LIQUID PHASE AN ORGANOSILANE OF THE GENERAL FORMULA RCH3S1X2, IN WHICH R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF METHYL AND PHENYL RADICALS AND X REPRESENTS A SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE ATOMS, AN ORGANOSILOXANE POLYMER CONTAINING POLYMERIC UNITS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
55 words
THE PROCESS COMPRISING REACTING IN LIQUID PHASE AN ORGANOSILANE OF THE GENERAL FORMULA RCH3S1X2, IN WHICH R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF METHYL AND PHENYL RADICALS AND X REPRESENTS A SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE ATOMS, AN ORGANOSILOXANE POLYMER CONTAINING POLYMERIC UNITS OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2258219A
Cited
US2507515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-06 | 1958-06-07 | 1958-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-06 | 1962-06-07 | 1962-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-06 | 1966-06-07 | 1966-12-07 | $7700.00 | Window Closed / Lapsed |