Patent US3984045A successfully refreshed from Google Patents.
US3984045A
Expired / Lapsed
US
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Canopener end
Assignee: Sonoco Products Co
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Filing: 1975-12-15
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Granted: 1976-10-05
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Expires: 1995-12-15
Abstract
Abstract A composite can having a tubular paperboard body and a metal end which includes a skirt encompassing a marginal portion of the can body.
Inventors
- 👤 Robert O. Blank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:57
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/26; B21D51/30; B21D51/32; B65; B65D; B65D15/00; B65D15/02; B65D15/04; B65D15/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
In an end closure arrangement for a composite can, the combination of: a. a can body including a tubular body wall formed of a deformable material, such as paperboard; b. a can end formed of a more rigid material, such as metal; c. said can end including a peripheral flange which is joined to an adjacent end portion of said can body wall by a seam; d. said flange including a tubular extension forming a skirt encompassing a marginal portion of said can body wall adjacent said seam to protect said can body wall.
Claim 2
Dependent Claim
94 words
In an end closure arrangement for a composite can, the combination of: a. a can body including a tubular body wall formed of a deformable material, such as paperboard; b. a can end formed of a more rigid material, such as metal; c. said can end including a peripheral flange which is joined to an adjacent end portion of said can body wall by a seam; d. said flange including a tubular extension forming a skirt encompassing a marginal portion of said can body wall adjacent said seam to protect said can body wall.
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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) | 1979-10-05 | 1980-04-05 | 1980-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-05 | 1984-04-05 | 1984-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-05 | 1988-04-05 | 1988-10-05 | $7700.00 | Window Closed / Lapsed |