Patent US2554791A successfully refreshed from Google Patents.
US2554791A
Expired / Lapsed
US
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Pressure adhesive tape and sheet
Assignee: CHARLES S VRITS
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Filing: 1948-11-20
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Granted: 1951-05-29
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Expires: 1968-11-20
Abstract
No abstract record available.
Inventors
- 👤 Mortimer H Nickerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:41
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/50; Y; Y10; Y10S; Y10S206/00; Y10S206/813; Y10S206/819; Y10T; Y10T428/00; Y10T428/28; Y10T428/2843; Y10T428/2852; Y10T428/2857; Y10T428/31504; Y10T428/31826; Y10T428/31833; Y10T428/31837; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917; Y10T428/3192
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
A PRESSURE SENSITIVE ADHESIVE TAPE COMPRISING A BACKING STRIP OF PLASTICIZED POLYVINYL CHLORIDE, SAID STRIP BEING COATED ON ONE SIDE WITH A POLYMER OF ISOBUTYLENE HAVING AN AVERAGE MOLECULAR WEIGHT OF NOT SUBSTANTIALLY LESS THAN 60,000 AND NOT SUBSTANTIALLY GREATER THAN 120,000, AND HAVING A COATING OF PRESSURE SENSITIVE ADHESIVE SUPERPOSED ON SAID FIRST-NAMED COATING, SAID ADHESIVE COMPRISING MAINLY A WATER DISPERSION OF RECLAIMED RUBBER, 30% SOLIDS, THE FIRST-NAMED COATING PROVIDING A NON-OFFSETTING BOND BETWEEN THE BACKING STRIP AND THE ADHESIVE COATING AND PREVENTING THE MIGRATION OF MIGRATORY PLASTICIZERS FROM THE BACKING INTO THE ADHESIVE.
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) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |