Patent US3301799A successfully refreshed from Google Patents.
US3301799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber latex, graphite and cement
Assignee: Uniroyal Inc
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Filing: 1963-10-11
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Granted: 1967-01-31
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Expires: 1983-10-11
Abstract
No abstract record available.
Inventors
- 👤 Henry M Rotbberg
- 👤 Frederick J Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:57
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B2111/00; C04B2111/00474; C04B2111/00482; Y; Y10; Y10S; Y10S528/00; Y10S528/931; Y10S528/934; Y10S528/935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
AN ELECTRICALLY CONDUCTIVE HYDRAULIC CEMENT COMPOSITION FOR CONSTRUCTING ELECTRICALLY CONDUCTIVE WALLS OR FLOORS COMPRISING, IN ADMIXTURE, BY WEIGHT: (A) 100 PARTS OF HYDRAULIC CEMENT; (B) RUBBER LATEX SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER LATEX BUTADIENE POLYMER LATEX, POLYCHLOROPRENE LATEX AND BUTYL RUBBER LATEX, IN AMOUNT SUFFICIENT TO PROVIDE FROM 5 TO 25 PARTS OF SOLIDS OF SAID RUBBER; (C) 10 TO 40 PARTS OF COLLOIDALLY DISPERSED GRAPHITE HAVING A PARTICLE SIZE OF NOT MORE THAN 10 MICRONS; (D) 3 TO 20 PARTS OF A NON-IONIC WETTING AGENT PER 100 PARTS OF SAID SOLIDS OF RUBBER LATEX; AND (E) UP TO 500 PARTS OF AGGREGATE.
Claim 2
Dependent Claim
106 words
AN ELECTRICALLY CONDUCTIVE HYDRAULIC CEMENT COMPOSITION FOR CONSTRUCTING ELECTRICALLY CONDUCTIVE WALLS OR FLOORS COMPRISING, IN ADMIXTURE, BY WEIGHT: (A) 100 PARTS OF HYDRAULIC CEMENT; (B) RUBBER LATEX SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER LATEX BUTADIENE POLYMER LATEX, POLYCHLOROPRENE LATEX AND BUTYL RUBBER LATEX, IN AMOUNT SUFFICIENT TO PROVIDE FROM 5 TO 25 PARTS OF SOLIDS OF SAID RUBBER; (C) 10 TO 40 PARTS OF COLLOIDALLY DISPERSED GRAPHITE HAVING A PARTICLE SIZE OF NOT MORE THAN 10 MICRONS; (D) 3 TO 20 PARTS OF A NON-IONIC WETTING AGENT PER 100 PARTS OF SAID SOLIDS OF RUBBER LATEX; AND (E) UP TO 500 PARTS OF AGGREGATE.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |