US3332799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible protective materials
Assignee: Winn and Coales Ltd
•
Filing: 1964-07-14
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Granted: 1967-07-25
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Expires: 1984-07-14
Abstract
No abstract record available.
Inventors
- 👤 Parker William Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:33
CPC Classifications
F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; F16L58/12; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31641; Y10T428/31786; Y10T428/31797; Y10T428/31815; Y10T428/31819; Y10T442/00; Y10T442/20; Y10T442/2738; Y10T442/2746
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A FLEXIBLE PROTECTIVE MATERIAL COMPRISING A FLEXIBLE FIBROUS SUPPORTING FABRIC CARRYING A PERMANENTLY PLIABLE COAL TAR PITCH COMPOSITION WHICH COMPOSITION CONSISTS ESSENTIALLY OF A COAL TAR PITCH MODIFIED BY HEAT TREATMENT IN THE PRESENCE OF COAL POWDER, SAID PITCH HAVING DIS PERSED THEREIN FROM 0.5 TO 5 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE COMPOSITION, OF POLYVINYL BUTYRAL, FROM 0 TO 40 PERCENT BY WEIGHT OF A HIGH BOILING HYDROCARBON LIQUID AND FROM 0 TO 30 PERCENT BY WEIGHT OF A FINELY DIVIDED MINERAL FILLER.
Claim 2
Dependent Claim
87 words
A FLEXIBLE PROTECTIVE MATERIAL COMPRISING A FLEXIBLE FIBROUS SUPPORTING FABRIC CARRYING A PERMANENTLY PLIABLE COAL TAR PITCH COMPOSITION WHICH COMPOSITION CONSISTS ESSENTIALLY OF A COAL TAR PITCH MODIFIED BY HEAT TREATMENT IN THE PRESENCE OF COAL POWDER, SAID PITCH HAVING DIS PERSED THEREIN FROM 0.5 TO 5 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE COMPOSITION, OF POLYVINYL BUTYRAL, FROM 0 TO 40 PERCENT BY WEIGHT OF A HIGH BOILING HYDROCARBON LIQUID AND FROM 0 TO 30 PERCENT BY WEIGHT OF A FINELY DIVIDED MINERAL FILLER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |