US4361655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processable silicone rubber composition
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1981-07-30
•
Granted: 1982-11-30
•
Expires: 2001-07-30
Abstract
Abstract An improved processable silicone rubber composition composed of a blend of 1 to 10 percent by weight of vulcanized particulate silicone rubber and 99 to 90 percent by weight of unvulcanized or virgin silicone rubber that can be tubed at a faster rate and lower temperature to minimize structure formation.
Inventors
- 👤 Keith A. Tyler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:42
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
39 words
An improved processing silicone rubber composition composed of 1 to 10 weight percent of vulcanized powdery particulated silicone rubber having an average particle size of less than 20 microns and 99 to 90 weight percent of unvulcanized silicone rubber.
Claim 2
Dependent Claim
39 words
An improved processing silicone rubber composition composed of 1 to 10 weight percent of vulcanized powdery particulated silicone rubber having an average particle size of less than 20 microns and 99 to 90 weight percent of unvulcanized silicone rubber.
Claim 3
Independent Claim
52 words
A method of tubing silicone rubber comprising mixing 1 to 10 weight percent of unvulcanized powdery particulate silicone rubber having an average particle size of less than 20 microns with 99 to 90 weight percent of unvulcanized silicone rubber to obtain a blend and then extruding said blend to form a tube.
Claim 4
Independent Claim
52 words
A method of tubing silicone rubber comprising mixing 1 to 10 weight percent of unvulcanized powdery particulate silicone rubber having an average particle size of less than 20 microns with 99 to 90 weight percent of unvulcanized silicone rubber to obtain a blend and then extruding said blend to form a tube.
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) | 1985-11-29 | 1986-05-31 | 1986-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-29 | 1990-05-31 | 1990-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-29 | 1994-05-31 | 1994-11-30 | $7700.00 | Window Closed / Lapsed |