US3369982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of improving the adhesive properties of polyolefin film by passing a diffuse electrical discharge over the film's surface
Assignee: PPG Architectural Coatings Canada Inc
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Filing: 1964-11-04
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Granted: 1968-02-20
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Expires: 1984-11-04
Abstract
No abstract record available.
Inventors
- 👤 Wood Herbert Holden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:59
CPC Classifications
B; B41; B41F; B41F23/00; B26; B26F; B26F1/00; B26F1/26; B26F1/28; B29; B29C; B29C59/00; B29C59/10; B29C59/106; B29K; B29K2023/00; B29K2067/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |