US2709161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of silicone rubber
Assignee: Connecticut Hard Rubber Co
•
Filing: 1952-04-25
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Granted: 1955-05-24
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Expires: 1972-04-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick L Kilbourne
- 👤 William B Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:45
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/32; C08G77/34; C08K; C08K3/00; C08K3/01; C08K3/013
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A METHOD WHICH COMPRISES DEVOLATILIZING A MIXTURE OF A RUBBERY DIMETHYL POLYSILOXANE AND AN INORGANIC FILLER BY HEATING THE SAME IN THE ABSENCE OF A CURING CATALYST TO EVAPORATE LOW BOILING CONSTITUENTS AND THEREAFTER COMPOUNDING THE MIXTURE WITH A PEROXIDE CATALYST AND CURING.
Claim 2
Independent Claim
43 words
A METHOD WHICH COMPRISES DEVOLATILIZING A MIXTURE OF A RUBBERY DIMETHYL POLYSILOXANE AND AN INORGANIC FILLER BY HEATING THE SAME IN THE ABSENCE OF A CURING CATALYST TO EVAPORATE LOW BOILING CONSTITUENTS AND THEREAFTER COMPOUNDING THE MIXTURE WITH A PEROXIDE CATALYST AND CURING.
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) | 1958-05-23 | 1958-11-22 | 1959-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-23 | 1962-11-22 | 1963-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-23 | 1966-11-22 | 1967-05-24 | $7700.00 | Window Closed / Lapsed |