Patent US2728734A successfully refreshed from Google Patents.
US2728734A
Expired / Lapsed
US
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Expansion joint sealing composition
Assignee: Patent and Licensing Corp
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Filing: 1951-11-30
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Granted: 1955-12-27
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Expires: 1971-11-30
Abstract
No abstract record available.
Inventors
- 👤 Richard H Cubberley
- 👤 John J Drukker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:48
CPC Classifications
C; C08; C08L; C08L95/00; B; B29; B29D; B29D99/00; B29D99/0053; B29K; B29K2021/00; B29L; B29L2031/00; B29L2031/26; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
AN EXPANSION JOINT SEALING COMPOSITION OF THE HOT POURED TYPE COMPRISING GROUND VULCANIZED SCRAP RUBBER, ASPHALT, AND A CYCLIC HYDROCARBON EXTRACT OBTAINED FROM LUBRICATING OIL BY SELECTIVE SOLVENT EXTRACTION WITH AN ORGANIC SOLVENT, SAID SCRAP CONTAINING NOT LESS THAN 45% BY WEIGHT OF A RUBBERY COPOLYMER OF BUTADIENE-STRYENE AND FROM 0% TO 55% WEIGHT NATURAL RUBBER, AND WHEREIN SAID CYCLIC HYDROCARBON IS PRESENT IN THE PROPORTION OF ONE-HALF TO ONE AND ONE-HALF PARTS BY WEIGHT PER PART OF BUTADIENE-STYRENE AND WHEREIN THE ASPHALT IS PRESENT IN THE PROPORTION OF ONE AND ONE-HALF TO THREE PARTS BY WEIGHT PER PART OF RUBBER.
Claim 2
Dependent Claim
101 words
AN EXPANSION JOINT SEALING COMPOSITION OF THE HOT POURED TYPE COMPRISING GROUND VULCANIZED SCRAP RUBBER, ASPHALT, AND A CYCLIC HYDROCARBON EXTRACT OBTAINED FROM LUBRICATING OIL BY SELECTIVE SOLVENT EXTRACTION WITH AN ORGANIC SOLVENT, SAID SCRAP CONTAINING NOT LESS THAN 45% BY WEIGHT OF A RUBBERY COPOLYMER OF BUTADIENE-STRYENE AND FROM 0% TO 55% WEIGHT NATURAL RUBBER, AND WHEREIN SAID CYCLIC HYDROCARBON IS PRESENT IN THE PROPORTION OF ONE-HALF TO ONE AND ONE-HALF PARTS BY WEIGHT PER PART OF BUTADIENE-STYRENE AND WHEREIN THE ASPHALT IS PRESENT IN THE PROPORTION OF ONE AND ONE-HALF TO THREE PARTS BY WEIGHT PER PART OF RUBBER.
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) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |