Patent US3913021A successfully refreshed from Google Patents.
US2819256A
Expired / Lapsed
US
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Composition of rubber and a di(arylalkyl) peroxide
Assignee: Hercules Powder Co
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Filing: 1954-06-09
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Granted: 1958-01-07
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Expires: 1974-06-09
Abstract
No abstract record available.
Inventors
- 👤 Boardman Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:11
CPC Classifications
C; C08; C08L; C08L21/00; C08K; C08K5/00; C08K5/04; C08K5/14; C08K5/16; C08K5/17; C08K5/29; C08K5/31
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
THE PROCESS WHICH COMPRISES VULCANIZING A RUBBER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER AND SYNTHETIC RUBBERY POLYMERS OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF CONJUGATED DIOLEFINS AND CHLOROPRENE IN THE PRESENCE OF FROM ABOUT 0.1% TO ABOUT 10% BASED ON THE WEIGHT OF RUBBER OF A DI(ARALKYL) PEROXIDE HAVING THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim
58 words
THE PROCESS WHICH COMPRISES VULCANIZING A RUBBER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER AND SYNTHETIC RUBBERY POLYMERS OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF CONJUGATED DIOLEFINS AND CHLOROPRENE IN THE PRESENCE OF FROM ABOUT 0.1% TO ABOUT 10% BASED ON THE WEIGHT OF RUBBER OF A DI(ARALKYL) PEROXIDE HAVING THE STRUCTURAL FORMULA:
Claim 3
Dependent Claim
52 words
A RUBBER COMPOSITION COMPRISING A RUBBER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER AND SYNTHETIC RUBBERY POLYMER OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF CONJUGATED DIOLEFINS AND CHLOROPRENE AND FROM ABOUT 0.1% TO ABOUT 10% BASED ON THE WEIGHT OF RUBBER OF A DI(ARALKYL) PEROXIDE HAVING THE STRUCTURAL FORMULA:
Claim 4
Dependent Claim
52 words
A RUBBER COMPOSITION COMPRISING A RUBBER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER AND SYNTHETIC RUBBERY POLYMER OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF CONJUGATED DIOLEFINS AND CHLOROPRENE AND FROM ABOUT 0.1% TO ABOUT 10% BASED ON THE WEIGHT OF RUBBER OF A DI(ARALKYL) PEROXIDE HAVING THE STRUCTURAL FORMULA:
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) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |