US2673844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dusting of rubberlike materials with cellulose
Assignee: Standard Oil Development Co
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Filing: 1950-12-22
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Granted: 1954-03-30
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Expires: 1970-12-22
Abstract
No abstract record available.
Inventors
- 👤 John R Gilcrease
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:57
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J3/124; C08J2321/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2982; Y10T428/2991; Y10T428/31504; Y10T428/31826; Y10T428/31841
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
AS AN ARTICLE OF MANUFACTURE, A RUBBERY BUTADINE EMULSION POLYMER IN CRUMB FORM, SAID CRUMBS HAVING A PARTICLE SIZE OF ABOUT 1/32 TO 1 INCH AVERAGE DIAMETER AND BEING COATED WITH AT LEAST 1.0% BASED ON THE WEIGHT OF POLYMER OF A DUSTING AGENT ON THE WEIGHT OF POLYMER OF A FIBROUS WOOD CELLULOSE REDUCED IN SIZE SO THAT AT LEAST 65% OF THE GROUND PARTICLES PASS THROUGH A 100-MESH SCREEN.
Claim 2
Dependent Claim
71 words
AS AN ARTICLE OF MANUFACTURE, A RUBBERY BUTADINE EMULSION POLYMER IN CRUMB FORM, SAID CRUMBS HAVING A PARTICLE SIZE OF ABOUT 1/32 TO 1 INCH AVERAGE DIAMETER AND BEING COATED WITH AT LEAST 1.0% BASED ON THE WEIGHT OF POLYMER OF A DUSTING AGENT ON THE WEIGHT OF POLYMER OF A FIBROUS WOOD CELLULOSE REDUCED IN SIZE SO THAT AT LEAST 65% OF THE GROUND PARTICLES PASS THROUGH A 100-MESH SCREEN.
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) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |