US3236437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End closure with lifting flange means for paperboard cartons
Assignee: Stone Container Corp
•
Filing: 1964-04-02
•
Granted: 1966-02-22
•
Expires: 1984-04-02
Abstract
No abstract record available.
Inventors
- 👤 Richard H Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:44
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A PAPERBOARD CARTON HAVING AN ELONGATE SLEEVE OF RECTANGULAR CROSS-SECTION OPEN AT THE UPPER END THEREOF AND AN END CLOSURE SECURED ACROSS SAID OPEN END, MEANS CARRIED BY SAID END CLOSURE FOR LIFTING THE CARTON WITH A CONVENTIONAL LIFTING BLADE COMPRISING, A MULTIPLETHICKNESS FLANGE COMPRISED OF A PAIR OF INTERLOCKED FLAPS CARRIED BY SAID SLEEVE AND SAID END CLOSURE, SAID FLANGE BEING COEXTENSIVE WITH ONE SIDE WALL OF THE SLEEVE ADJACENT SAID OPEN END AND EXTERIOR OF THE SLEEVE, SAID FLANGE ALSO HAVING OPPOSITE ENDS AND A CORNER FLAP MEMBER HINGEDLY CONNECTED TO EACH OF SAID FLANGE ENDS AND ADHESIVELY SECURED TO A PAIR OF OPPOSITE SIDE WALLS OF
Claim 2
Dependent Claim
110 words
IN A PAPERBOARD CARTON HAVING AN ELONGATE SLEEVE OF RECTANGULAR CROSS-SECTION OPEN AT THE UPPER END THEREOF AND AN END CLOSURE SECURED ACROSS SAID OPEN END, MEANS CARRIED BY SAID END CLOSURE FOR LIFTING THE CARTON WITH A CONVENTIONAL LIFTING BLADE COMPRISING, A MULTIPLETHICKNESS FLANGE COMPRISED OF A PAIR OF INTERLOCKED FLAPS CARRIED BY SAID SLEEVE AND SAID END CLOSURE, SAID FLANGE BEING COEXTENSIVE WITH ONE SIDE WALL OF THE SLEEVE ADJACENT SAID OPEN END AND EXTERIOR OF THE SLEEVE, SAID FLANGE ALSO HAVING OPPOSITE ENDS AND A CORNER FLAP MEMBER HINGEDLY CONNECTED TO EACH OF SAID FLANGE ENDS AND ADHESIVELY SECURED TO A PAIR OF OPPOSITE SIDE WALLS OF
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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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |