US2546705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of laminating polyvinyl alcohol film to paper and product
Assignee: Individual
•
Filing: 1947-08-19
•
Granted: 1951-03-27
•
Expires: 1967-08-19
Abstract
No abstract record available.
Inventors
- 👤 Jay F Strawinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:18
CPC Classifications
D; D21; D21H; D21H27/00; D21H27/30; D21H27/32; D21H27/34; D21H27/36; B; B32; B32B; B32B27/00; D21H19/00; D21H19/10; D21H19/14; D21H19/20; D21H21/00; D21H21/14; D21H21/16; D21H21/22; D21H23/00; D21H23/02; D21H23/22; D21H23/52; D21H23/64; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249941; Y10T428/249953; Y10T428/249962; Y10T428/249964; Y10T428/249965; Y10T428/249966; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/269; Y10T428/31504; Y10T428/31678; Y10T428/31703; Y10T428/31855; Y10T428/3188; Y10T428/31895
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
57 words
THE METHOD OF MAKING LAMINATED SHEET MATERIAL WHICH COMPRISES INCREASING THE AREA OF A SHEET OF POLYVINYL ALCOHOL FILM BY STRETCHING THE SHEET IN A PLURALITY OF DIRECTIONS, APPLYING DIRECTLY TO THE SURFACES OF THE STRETCHED SHEET WITH AQUEOUS MOSITENING EXTERIOR WEBS OF POROUS THIN FIBROUS SHEET MATERIAL, AND RESTRAINING THE LAMINATED MATERIAL FROM SHRINKING DURING DRYING.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-26 | 1954-09-25 | 1955-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-26 | 1958-09-25 | 1959-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-26 | 1962-09-25 | 1963-03-27 | $7700.00 | Window Closed / Lapsed |