US3088843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of perforating
Assignee: Kendall Co
•
Filing: 1960-11-23
•
Granted: 1963-05-07
•
Expires: 1980-11-23
Abstract
No abstract record available.
Inventors
- 👤 Charles H Schaar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:20
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/02; A61F13/0276; A61F13/0283
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A METHOD COMPRISING APPLYING A LIQUID TO ONE SIDE OF A PERMEABLE TAPE BACKING ON THE OTHER SIDE OF WHICH IS POSITIONED A LAYER OF THERMOPLASTIC PRESSURE-SENSITIVE ADHESIVE, PRESSING A HEATED PROJECTION INTO SAID ADHESIVE LAYER TOWARD THE PERMEABLE BACKING TO PIERCE SAID ADHESIVE LAYER THROUGH TO THE SURFACE OF SAID BACKING AT THE INTERFACE BETWEEN SAID ADHESIVE LAYER AND SAID BACKING CONTACTING THE TIP OF SAID PROJECTION AGAINST THE SURFACE OF SAID BACKING AT SAID INTERFACE WITH NO RELATIVE LINEAR MOTION AT THE TIME OF CONTACT BETWEEN SAID BACKING AND SAID TIP OF THE PROJECTION AND THEN WITHDRAWING THE HEATED PROJECTION THEREFROM.
Claim 2
Independent Claim
103 words
A METHOD COMPRISING APPLYING A LIQUID TO ONE SIDE OF A PERMEABLE TAPE BACKING ON THE OTHER SIDE OF WHICH IS POSITIONED A LAYER OF THERMOPLASTIC PRESSURE-SENSITIVE ADHESIVE, PRESSING A HEATED PROJECTION INTO SAID ADHESIVE LAYER TOWARD THE PERMEABLE BACKING TO PIERCE SAID ADHESIVE LAYER THROUGH TO THE SURFACE OF SAID BACKING AT THE INTERFACE BETWEEN SAID ADHESIVE LAYER AND SAID BACKING CONTACTING THE TIP OF SAID PROJECTION AGAINST THE SURFACE OF SAID BACKING AT SAID INTERFACE WITH NO RELATIVE LINEAR MOTION AT THE TIME OF CONTACT BETWEEN SAID BACKING AND SAID TIP OF THE PROJECTION AND THEN WITHDRAWING THE HEATED PROJECTION THEREFROM.
References Cited (Backward Citations)
US2190654A
Cited
US2861006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |