US2653880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-activated temporarily pressure-sensitive adhesive tape
Assignee: 3M Co
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Filing: 1949-09-15
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Granted: 1953-09-29
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Expires: 1969-09-15
Abstract
No abstract record available.
Inventors
- 👤 James O Hendricks
- 👤 Ambrose F Schmelzle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:27
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/34; C09; C09J; C09J7/00; C09J7/20; C09J7/21; C09J7/30; C09J7/35; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2822; Y10T428/2839
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A NORMALLY NON-TACKY HEAT-ACTIVATIBLE FLEXBLE ADHESIVE SHEET MATERIAL CAPABLE OF BEING STACKED OR ROLLED ON ITSELF AT NORMAL ROOM TEMPERATURES WITHOUT BLOCKING, CAPABLE OF BEING UNWOUND FROM ROLL FORM WITH SUBSTANTIALY NO ADHESIVE TENSION, AND WHICH AFTER REMOVAL FROM THE ROLL, ACTIVATION BY HEATING, AND COOLING TO ROOM TEMPERATURE REMAINS TEMPORARILY TACKY AND PRESSURE-SENSITIVE, SAID SHEET MATERIAL COMPRISING A THIN FLEXIBLE BACKING MEMBER COATED ON AT LEAST ONE SURFACE WITH A HEAT-ACTIVATIBLE AND POTENTIALLY TEMPORARILY TACKY ADHESIVE COMPOSITION COMPRISING A LOW ACID NUMBER, FUSIBLE HEAT REACTION PRODUCT OF THE FOLLOWING COMPONENTS IN THE INDICATED PROPORTIONAL MOLAR EQUIVALENTS:
Claim 2
Dependent Claim
97 words
A NORMALLY NON-TACKY HEAT-ACTIVATIBLE FLEXBLE ADHESIVE SHEET MATERIAL CAPABLE OF BEING STACKED OR ROLLED ON ITSELF AT NORMAL ROOM TEMPERATURES WITHOUT BLOCKING, CAPABLE OF BEING UNWOUND FROM ROLL FORM WITH SUBSTANTIALY NO ADHESIVE TENSION, AND WHICH AFTER REMOVAL FROM THE ROLL, ACTIVATION BY HEATING, AND COOLING TO ROOM TEMPERATURE REMAINS TEMPORARILY TACKY AND PRESSURE-SENSITIVE, SAID SHEET MATERIAL COMPRISING A THIN FLEXIBLE BACKING MEMBER COATED ON AT LEAST ONE SURFACE WITH A HEAT-ACTIVATIBLE AND POTENTIALLY TEMPORARILY TACKY ADHESIVE COMPOSITION COMPRISING A LOW ACID NUMBER, FUSIBLE HEAT REACTION PRODUCT OF THE FOLLOWING COMPONENTS IN THE INDICATED PROPORTIONAL MOLAR EQUIVALENTS:
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) | 1956-09-28 | 1957-03-30 | 1957-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-28 | 1961-03-30 | 1961-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-28 | 1965-03-30 | 1965-09-29 | $7700.00 | Window Closed / Lapsed |