US3303760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for forming carton bottom
Assignee: International Paper Co
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Filing: 1964-04-06
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Granted: 1967-02-14
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Expires: 1984-04-06
Abstract
No abstract record available.
Inventors
- 👤 Lawrence S Tobias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:21
CPC Classifications
B; B31; B31B; B31B50/00; B31B50/26; B31B50/28; B31B50/30; B31B50/34; B31B50/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN THE MANUFACTURE OF PAPERBOARD CARTONS FROM FLAT CARTON BLANKS, A METHOD COMPRISING A FIRST STEP OF HANDLING A BLANK TO PROVIDE A CARTON HAVING SIDES ENDING IN A COMMON EDGE, A SECOND STEP OF PLACING THE CARTON ON A MANDREL WITH THE COMMON EDGE EXTENDING BEYOND THE MANDREL, A THIRD STEP OF ROTATING THE MANDREL TO A CARTON BOTTOMING STATION, AND A FOURTH STEP OF PRESSING A FLAT, HEATED BLANK MADE FROM A THERMOPLASTIC MATERIAL AGAINST THE COMMON EDGE UNTIL IT IS EMBEDDED IN THE MATERIAL.
Claim 2
Dependent Claim
87 words
IN THE MANUFACTURE OF PAPERBOARD CARTONS FROM FLAT CARTON BLANKS, A METHOD COMPRISING A FIRST STEP OF HANDLING A BLANK TO PROVIDE A CARTON HAVING SIDES ENDING IN A COMMON EDGE, A SECOND STEP OF PLACING THE CARTON ON A MANDREL WITH THE COMMON EDGE EXTENDING BEYOND THE MANDREL, A THIRD STEP OF ROTATING THE MANDREL TO A CARTON BOTTOMING STATION, AND A FOURTH STEP OF PRESSING A FLAT, HEATED BLANK MADE FROM A THERMOPLASTIC MATERIAL AGAINST THE COMMON EDGE UNTIL IT IS EMBEDDED IN THE MATERIAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |