US3302501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fibrillating plastic film by passing the film through rotating piercing means
Assignee: Phillips Petroleum Co
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Filing: 1965-09-24
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Granted: 1967-02-07
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Expires: 1985-09-24
Abstract
No abstract record available.
Inventors
- 👤 Max E Greene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:01
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/42; D01D5/423; Y; Y10; Y10S; Y10S264/00; Y10S264/47; Y10T; Y10T225/00; Y10T225/10; Y10T225/14; Y10T83/00; Y10T83/02; Y10T83/0237; Y10T83/0244; Y10T83/04; Y10T83/0481; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/483
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
54 words
A METHOD FOR PRETREATING A FILM FOR SUBSEQUENT FIBRILLATION COMPRISING PARTIALLY PENETRATING THE FILM AT A PLURALITY OF POINTS BY PASSING A PLURALITY OF PIERCING MEANS INTO SAID FILM AND WITHDRAWING SAID PIERCING MEANS THEREFROM WITHOUT SUBSTANTIAL MOVEMENT OF SAID PIERCING MEANS IN A DIRECTION SUBSTANTIALLY PERPENDICULAR TO THE THIKNESS AXIS OF SAID FILM.
References Cited (Backward Citations)
US528696A
Cited
US3126777A
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US2428810A
Cited
US2853741A
Cited
US3009848A
Cited
US3074303A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |