US2667436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure sensitive adhesive coated sheet material
Assignee: Unifrax I LLC
•
Filing: 1950-09-21
•
Granted: 1954-01-26
•
Expires: 1970-09-21
Abstract
No abstract record available.
Inventors
- 👤 George J Goepfert
- 👤 Howard M Canfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:37
CPC Classifications
B; B32; B32B; B32B37/00; B32B37/12; B32B37/1284; B32B37/1292; B32B38/00; B32B38/18; B32B38/1825; C; C09; C09J; C09J7/00; C09J7/20; C09J2301/00; C09J2301/20; C09J2301/204
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
AS A NEW ARTICLE OF MANUFACTURE, SHEET MATERIAL HAVING A FILM OF PRESSURE SENSITIVE ADHESIVE ADHESIVELY ATTACHED TO AT LEAST ONE SIDE, AND A PROTECTIVE SHEET CONSISTING ESSENTIALLY OF PIGMENTED POLYETHYLENE EMBOSSED TO FORM PARALLELOGRAMS WHICH LIE SUBSTANIALLY IN THE SAME PLANE AND WHICH ARE SEPARATED FROM BUT ATTACHED TO EACH OTHER BY RAISED RIBS ADHESIVELY ATTACHED TO THE OUTER SURFACE OF THE PRESSURE SENSITIVE ADHESIVE FILM WITH THE RIBS ON THE OUTER SIDE, THE PRESSURE SENSITIVE ADHESIVE FILM BEING IN LARGE PART IN THE FORM OF PARALLELOGRAMS WHICH ARE SEPARATED BY CHANNELS IN WHICH THE PRESSURE SENSITIVE ADHESIVE COATING IS THINNER THAN THAT OF THE PARALLELOGRAMS AND ARE ATTACHED TO THE PARALLELOGRAMS ON THE PROTECTIVE SHEET, THE CHANNELS IN THE PRESSURE SENSITIVE ADHESIVE AND THE RIBS ON THE PROTECTIVE SHEET FORMING CHANNELS WHICH COMMUNICATE TO THE EDGE OF THE SHEET THROUGH WHICH GASES WHICH MIGHT BE ENTRAPPED BETWEEN THE PRESSURE SENSITIVE ADHESIVE FILM AND THE PROTECTIVE SHEET CAP ESCAPE WHEREBY THE PROTECTIVE SHEET IS SUBSTANTIALLY FREE FROM BLISTERS AND BUBBLES.
Claim 2
Dependent Claim
171 words
AS A NEW ARTICLE OF MANUFACTURE, SHEET MATERIAL HAVING A FILM OF PRESSURE SENSITIVE ADHESIVE ADHESIVELY ATTACHED TO AT LEAST ONE SIDE, AND A PROTECTIVE SHEET CONSISTING ESSENTIALLY OF PIGMENTED POLYETHYLENE EMBOSSED TO FORM PARALLELOGRAMS WHICH LIE SUBSTANIALLY IN THE SAME PLANE AND WHICH ARE SEPARATED FROM BUT ATTACHED TO EACH OTHER BY RAISED RIBS ADHESIVELY ATTACHED TO THE OUTER SURFACE OF THE PRESSURE SENSITIVE ADHESIVE FILM WITH THE RIBS ON THE OUTER SIDE, THE PRESSURE SENSITIVE ADHESIVE FILM BEING IN LARGE PART IN THE FORM OF PARALLELOGRAMS WHICH ARE SEPARATED BY CHANNELS IN WHICH THE PRESSURE SENSITIVE ADHESIVE COATING IS THINNER THAN THAT OF THE PARALLELOGRAMS AND ARE ATTACHED TO THE PARALLELOGRAMS ON THE PROTECTIVE SHEET, THE CHANNELS IN THE PRESSURE SENSITIVE ADHESIVE AND THE RIBS ON THE PROTECTIVE SHEET FORMING CHANNELS WHICH COMMUNICATE TO THE EDGE OF THE SHEET THROUGH WHICH GASES WHICH MIGHT BE ENTRAPPED BETWEEN THE PRESSURE SENSITIVE ADHESIVE FILM AND THE PROTECTIVE SHEET CAP ESCAPE WHEREBY THE PROTECTIVE SHEET IS SUBSTANTIALLY FREE FROM BLISTERS AND BUBBLES.
References Cited (Backward Citations)
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US2156279A
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US2178566A
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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) | 1957-01-25 | 1957-07-27 | 1958-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-25 | 1961-07-27 | 1962-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-25 | 1965-07-27 | 1966-01-26 | $7700.00 | Window Closed / Lapsed |