Patent US3700524A successfully refreshed from Google Patents.
US3700524A
Expired / Lapsed
US
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Method of sealing the seaming portions of a can
Assignee: Toyo Seikan Group Holdings Ltd
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Filing: 1969-05-26
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Granted: 1972-10-24
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Expires: 1989-05-26
Abstract
Abstract A CAN BODY IS SEALED TO THE TOP OR BOTTOM PLATE BY APPLYING A RUBBER COMPOUND TO THE PERIPHERY OF THE PLATE, THEN APPLYING A FILM OF URETHANE RESIN TO THE RUBBER TO IMPROVE THE RESISTANCE TO SOLVENTS WHICH MAY BE IN THE CAN CONTENTS, AND THEN ROLLING UP THE LAMINATED PORTION OF THE PLATE OVERLAPPINGLY WITH THE END OF THE CAN IN SUCH A WAY THAT A TRIPLE ROLLED UP LAYER OF THE LAMINATED PORTION MATES WITH A U-SHAPED INVERTED FOLD OF THE CAN BODY.
Inventors
- 👤 Yoshikatsu Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:11
CPC Classifications
B; B65; B65D; B65D53/00; B21; B21D; B21D51/00; B21D51/16; B21D51/38; B21D51/44; B21D51/46; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036; Y10T156/1038
Claims Analysis
Total Claims: 0
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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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |