Patent US2540252A successfully refreshed from Google Patents.
US2540252A
Expired / Lapsed
US
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Rubberized bituminous sealing joint
Assignee: Servicised Products Corp
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Filing: 1945-04-04
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Granted: 1951-02-06
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Expires: 1965-04-04
Abstract
No abstract record available.
Inventors
- 👤 Wallace C Fischer
- 👤 Cecile G Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:28
CPC Classifications
E; E04; E04D; E04D5/00; E04D5/14; E04D5/148; C; C09; C09J; C09J195/00; C08; C08L; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A LAP JOINT FOR ROOFING SHEETS EMBODYING A LAYER OF RUBBERIZED BITUMINOUS OIL COMPOSITION BETWEEN OVERLAPPING PORTONS OF SAID SHEETS, SAID COMPOSITION COMPRISING RUBBER, FLUX OIL AND ASPHALT, AND BEING TACKY, ADHESIVE AND HIGHLY DISTENSIBLE AT VARYING DEGREES OF TEMPERATURE, ABOVE AND BELOW FREEZING, TO MAINTAIN THE PORTIONS OF THE LAPPED SHEETS IN SEALED RELATION, SAID COMPOSITION MATERIAL BEING COMPOSED OF 14 TO 30% RUBBER, 40 TO 50% ASPHALT, 14 TO 33% FLUX OIL AND 2 TO 12% RESIN.
Claim 2
Dependent Claim
79 words
A LAP JOINT FOR ROOFING SHEETS EMBODYING A LAYER OF RUBBERIZED BITUMINOUS OIL COMPOSITION BETWEEN OVERLAPPING PORTONS OF SAID SHEETS, SAID COMPOSITION COMPRISING RUBBER, FLUX OIL AND ASPHALT, AND BEING TACKY, ADHESIVE AND HIGHLY DISTENSIBLE AT VARYING DEGREES OF TEMPERATURE, ABOVE AND BELOW FREEZING, TO MAINTAIN THE PORTIONS OF THE LAPPED SHEETS IN SEALED RELATION, SAID COMPOSITION MATERIAL BEING COMPOSED OF 14 TO 30% RUBBER, 40 TO 50% ASPHALT, 14 TO 33% FLUX OIL AND 2 TO 12% RESIN.
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) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |