Patent US3687791A successfully refreshed from Google Patents.
US3687791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for adhesive lamination of flexible webs
Assignee: Gulf Canada Ltd
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Filing: 1970-11-23
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Granted: 1972-08-29
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Expires: 1990-11-23
Abstract
Abstract THE INVENTION PROVIDES APPARATUS FOR APPLYING MOLTEN ADHESIVE, ESPECIALLY THE "HOT MELT" TYPE, TO A FLEXIBLE SUBSTRATE WITH SUBSEQUENT ADHESIVE LAMINATION OF THE SUBSTRATE, BY GENERATING TACKY FINE FILAMENTS OF THE MLTEN ADHESIVE BETWEEN A PAIR OF MOVING SURFACES, DEPOSITING THE TACKY FILAMENTS ONTO THE FLEXIBLE SUBSTRATE WHILE PRECLUDING CONTACT BETWEEN THE SUBSTRATE AND THE MOVING SURFACES, THEN ADHESIVELY SECURING THE SUBSTRATE AS A LAMINA TO ANOTHER LAMINA BY MEANS OF THE DEPOSITED TACKY FILAMENTS.
Inventors
- 👤 Leo M Germain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:46
CPC Classifications
B; B32; B32B; B32B29/00; B32B29/02; B32B7/00; B32B7/04; B32B7/12; B32B7/14; B32B2262/00; B32B2262/02; B32B2262/0223; B32B2262/0253; B32B2262/0261; B32B2262/0276; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1722; Y10T156/1727
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |