Patent US3118534A successfully refreshed from Google Patents.
US3118534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-sensitive adhesive tape
Assignee: 3M Co
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Filing: 1959-12-16
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Granted: 1964-01-21
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Expires: 1979-12-16
Abstract
No abstract record available.
Inventors
- 👤 Gaylord L Groff
- 👤 Herbert M Bond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:00
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/48; H01B3/485; H01B3/50; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2839; Y10T428/2852; Y10T428/2857
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A THERMOSETTING PRESSURE-SENSITIVE ADHESIVE TAPE WOUND UPON ITSELF IN ROLL FORM AND CAPABLE OF BEING UNWOUND THEREFROM AND ADAPTED TO BE WOUND IN PLACE IN LAPPED FASHION OVER AN ELECTRICAL COIL AND OF THEN BEING HEATED TO CURE THE ADHESIVE TO AN OIL AND SOLVENT RESISTANT STATE, SAID ADHESIVE TAPE CONSISTING ESSENTIALLY OF A CONTINUOUS SHEET OF PAPER, A THERMOSETTING PRESSURESENSITEIVE ADHESIVE COATING FIRMLY UNTIED TO ONE SURFACE OF THE PAPER, A FILM OF CRYSTALLINE POLYPROPYLENE FUSED TO THE OTHER SURFACE OF THE PAPER AND COMPLETELY COVERING THE SURFACE, THE EXPOSED FACE OF THE POLYPROPYLENE HAVING BEEN TREATED BY AN ADHESION-PROMOTING ELECTRICAL DISCHARGE, AND A LOW-ADHESION BACKSIZE COATING ON THE ADHESION-PROMOTED FACE OF THE POLYPROPYLENE.
Claim 2
Dependent Claim
115 words
A THERMOSETTING PRESSURE-SENSITIVE ADHESIVE TAPE WOUND UPON ITSELF IN ROLL FORM AND CAPABLE OF BEING UNWOUND THEREFROM AND ADAPTED TO BE WOUND IN PLACE IN LAPPED FASHION OVER AN ELECTRICAL COIL AND OF THEN BEING HEATED TO CURE THE ADHESIVE TO AN OIL AND SOLVENT RESISTANT STATE, SAID ADHESIVE TAPE CONSISTING ESSENTIALLY OF A CONTINUOUS SHEET OF PAPER, A THERMOSETTING PRESSURESENSITEIVE ADHESIVE COATING FIRMLY UNTIED TO ONE SURFACE OF THE PAPER, A FILM OF CRYSTALLINE POLYPROPYLENE FUSED TO THE OTHER SURFACE OF THE PAPER AND COMPLETELY COVERING THE SURFACE, THE EXPOSED FACE OF THE POLYPROPYLENE HAVING BEEN TREATED BY AN ADHESION-PROMOTING ELECTRICAL DISCHARGE, AND A LOW-ADHESION BACKSIZE COATING ON THE ADHESION-PROMOTED FACE OF THE POLYPROPYLENE.
References Cited (Backward Citations)
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Cited
US2561063A
Cited
US2825721A
Cited
US2789096A
Cited
US2879177A
Cited
US2939860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-20 | 1967-07-22 | 1968-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-20 | 1971-07-22 | 1972-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-20 | 1975-07-22 | 1976-01-21 | $7700.00 | Window Closed / Lapsed |