Patent US3298934A successfully refreshed from Google Patents.
Patent US3230192A successfully refreshed from Google Patents.
US3230192A
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US
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Extruded pitch based material and process for producing the same
Assignee: Tapecoat Co Inc
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Filing: 1962-12-10
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Granted: 1966-01-18
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Expires: 1982-12-10
Abstract
No abstract record available.
Inventors
- 👤 Mazurk Louis Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:26
CPC Classifications
C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PROCESS FOR PRODUCING EXTRUDED TAPES FROM A THERMOPLASTIC MIXTURE COMPRISING A SUBSTANTIAL PROPORTION, IN THE RANGE OF 30 TO 95 PARTS, OF PITCH AND A SUBSTANTIAL PROPORTION IN THE RANGE OF 5 TO 70 PARTS PLASTICIZED HIGH MOLECULAR WEIGHT POLYMER SELECTED FROM THE CLASS CONSISTING OF POLYVINYLCHLORIDE, POLYVINYLIDENECHLORIDE, AND THE COPOLYMER OF VINYLCHLORIDE AND VINYLACETATE, WHICH PROCESS COMPRISES HEATING SAID MIXTURE TO A TEMPERATURE IN THE RANGE OF ABOUT 300 TO 340*F., COOLING THE MIXTURE TO A TEMPERATURE IN THE RANGE OF 240 TO 263* F. AND EXTRUDING THE MIXTURE TO TAPE FORM.
Claim 2
Dependent Claim
94 words
A PROCESS FOR PRODUCING EXTRUDED TAPES FROM A THERMOPLASTIC MIXTURE COMPRISING A SUBSTANTIAL PROPORTION, IN THE RANGE OF 30 TO 95 PARTS, OF PITCH AND A SUBSTANTIAL PROPORTION IN THE RANGE OF 5 TO 70 PARTS PLASTICIZED HIGH MOLECULAR WEIGHT POLYMER SELECTED FROM THE CLASS CONSISTING OF POLYVINYLCHLORIDE, POLYVINYLIDENECHLORIDE, AND THE COPOLYMER OF VINYLCHLORIDE AND VINYLACETATE, WHICH PROCESS COMPRISES HEATING SAID MIXTURE TO A TEMPERATURE IN THE RANGE OF ABOUT 300 TO 340*F., COOLING THE MIXTURE TO A TEMPERATURE IN THE RANGE OF 240 TO 263* F. AND EXTRUDING THE MIXTURE TO TAPE FORM.
References Cited (Backward Citations)
US3090763A
Cited
GB726816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |