US3285864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permeable microporous plastic sheet and the method of making the same
Assignee: Rogers Corp
•
Filing: 1963-05-08
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Granted: 1966-11-15
•
Expires: 1983-05-08
Abstract
No abstract record available.
Inventors
- 👤 Jerrold J Abell
- 👤 Kenneth J Virkus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:39
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/24; C08K; C08K5/00; C08K5/54; C08K5/541; C08K5/5415; Y; Y10; Y10S; Y10S521/00; Y10S521/919
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PERMEABLE MICROPOROUS SHEET OF SINTERED, NONPLASTICIZED GRANULAR RESIN, SAID RESIN BEING A COPOLYMER ESSENTIALLY OF 97% TO 98% BY WEIGHT OF VINYL COPOLYMER AND 2% TO 3% BY WEIGHT VINYL ACETATE, SAID SHEET HAVING ITS MECHANICAL STRENGTH IMPROVED BY THE ADDITION OF AN ETHYL SILICAL TO SAID RESIN.
Claim 2
Dependent Claim
49 words
A PERMEABLE MICROPOROUS SHEET OF SINTERED, NONPLASTICIZED GRANULAR RESIN, SAID RESIN BEING A COPOLYMER ESSENTIALLY OF 97% TO 98% BY WEIGHT OF VINYL COPOLYMER AND 2% TO 3% BY WEIGHT VINYL ACETATE, SAID SHEET HAVING ITS MECHANICAL STRENGTH IMPROVED BY THE ADDITION OF AN ETHYL SILICAL TO SAID 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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |