US3833401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Degradable polyethylene film
Assignee: Atlantic Richfield Co
•
Filing: 1972-11-16
•
Granted: 1974-09-03
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Expires: 1992-11-16
Abstract
Abstract Polyethylene film is caused to degrade in a predetermined pattern by the printing of the pattern on the surface of the film using printing ink containing a degradation promoter such as ultraviolet sensitizers, oxidation promoters, or embrittling agents.
Inventors
- 👤 A Ingram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:04
CPC Classifications
A; A01; A01G; A01G13/00; A01G13/30; A01G13/32; A01G13/33; B; B41; B41M; B41M1/00; B41M1/26; B41M1/30; C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0033; G; G03; G03F; G03F7/00; G03F7/004; G03F7/039; Y; Y10; Y10S; Y10S428/00; Y10S428/913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
The process of claim 1 wherein the degradation promoter is printed in a continuous coating whereby the entire film is degraded uniformly.
Claim 2
Dependent Claim
30 words
The process of claim 1 wherein the degradation promoter is printed in a discontinuous pattern whereby the printed portions of the film are degraded more rapidly than the unprinted portions.
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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |