US2886471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid polyethylene plastic materials
Assignee: British Cellophane Ltd
•
Filing: 1955-03-24
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Granted: 1959-05-12
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Expires: 1975-03-24
Abstract
No abstract record available.
Inventors
- 👤 Bruce Charles Richard
- 👤 Williams Trevor Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:38
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06; Y; Y10; Y10S; Y10S8/00; Y10S8/09; Y10S8/10; Y10S8/92; Y10S8/928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS FOR TREATING HEAT-DEFORMABLE SOLID POLYETHYLENE PLASTIC MATERIALS TO RENDER THE SURFAACE OF THE MATERIAL RECEPTIVE TO PRINTING INKS AND ADHESIVES WITHOUT DEFORMATION OF THE MATERIAL, WHICH PROCESS COMPRISES TREATING THE SURFACE OF THE HEAT-DEFORMABLE SOLID POLYETHYLENE PLASTIC MATERIAL WITH A SOLUTION CONSISTING ESSENTIALLY OF WATER, CONTAINING CHROMIUM TRIOXIDE DISSOLVED THEREIN IN THE RANGE OF 35% BY WEIGHT TO SATURATION, FOLLOWED BY WASHING THE TREATED MATERIAL WITH WATER AND DRYING.
Claim 2
Dependent Claim
71 words
A PROCESS FOR TREATING HEAT-DEFORMABLE SOLID POLYETHYLENE PLASTIC MATERIALS TO RENDER THE SURFAACE OF THE MATERIAL RECEPTIVE TO PRINTING INKS AND ADHESIVES WITHOUT DEFORMATION OF THE MATERIAL, WHICH PROCESS COMPRISES TREATING THE SURFACE OF THE HEAT-DEFORMABLE SOLID POLYETHYLENE PLASTIC MATERIAL WITH A SOLUTION CONSISTING ESSENTIALLY OF WATER, CONTAINING CHROMIUM TRIOXIDE DISSOLVED THEREIN IN THE RANGE OF 35% BY WEIGHT TO SATURATION, FOLLOWED BY WASHING THE TREATED MATERIAL WITH WATER AND DRYING.
References Cited (Backward Citations)
US2668134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |