Patent US3520765A successfully refreshed from Google Patents.
US3520765A
Expired / Lapsed
US
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Moisture permeable composite sheet material and process for preparing same
Assignee: EIDP Inc
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Filing: 1967-04-28
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Granted: 1970-07-14
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Expires: 1987-04-28
Abstract
No abstract record available.
Inventors
- 👤 Alva W Bateman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:20
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/64; B; B32; B32B; B32B27/00; C; C08; C08J; C08J9/00; C08J9/28; D06; D06N; D06N3/00; D06N3/0002; D06N3/0013; C08J2201/00; C08J2201/04; C08J2201/054; C08J2201/0542; C08J2201/0544; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10T; Y10T442/00; Y10T442/30; Y10T442/3065; Y10T442/313; Y10T442/3707; Y10T442/378; Y10T442/3813
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3418198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |