US3111471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical treatment of polyethylene film
Assignee: Dow Chemical Co
•
Filing: 1960-07-05
•
Granted: 1963-11-19
•
Expires: 1980-07-05
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Evans
- 👤 Albert J Palfey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:57
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/10; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C48/25; B29C48/88; B29C48/911; B29C48/9135; B29C48/915; B29C48/9165; B41; B41M; B41M1/00; B41M1/26; B41M1/30; B41M1/305; H; H01; H01T; H01T19/00; B29C48/001; B29C48/0018; B29C48/0019; B29C48/0022; B29C48/09; B29C48/10; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29L; B29L2023/00; B29L2023/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
IN A PROCESS FOR ELECTRICALLY TREATING POLYETHYLENE FILM BY PASSING THE FILM THROUGH AN ELECTRICAL GLOW DISCHARGE BETWEEN AN ELECTRODE AND A DIELECTRICALLY COATED CONDUCTOR ROLL, THE IMPROVEMENT WHIGH COMPRISES EMPLOYING AS THE DIELECTRIC COATING ON THE CONDUCTOR ROLL A PHENOL-FORMALDEHYDE RESIN WHICH IS FREE FROM WATER AND COMPLETELY SOLUBLE IN LACQUER SYSTEMS.
Claim 2
Dependent Claim
53 words
IN A PROCESS FOR ELECTRICALLY TREATING POLYETHYLENE FILM BY PASSING THE FILM THROUGH AN ELECTRICAL GLOW DISCHARGE BETWEEN AN ELECTRODE AND A DIELECTRICALLY COATED CONDUCTOR ROLL, THE IMPROVEMENT WHIGH COMPRISES EMPLOYING AS THE DIELECTRIC COATING ON THE CONDUCTOR ROLL A PHENOL-FORMALDEHYDE RESIN WHICH IS FREE FROM WATER AND COMPLETELY SOLUBLE IN LACQUER SYSTEMS.
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) | 1966-11-18 | 1967-05-20 | 1967-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-18 | 1971-05-20 | 1971-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-18 | 1975-05-20 | 1975-11-19 | $7700.00 | Window Closed / Lapsed |