Patent US3077820A successfully refreshed from Google Patents.
US3077820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bag making
Assignee: Dow Chemical Co
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Filing: 1959-04-03
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Granted: 1963-02-19
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Expires: 1979-04-03
Abstract
No abstract record available.
Inventors
- 👤 Hoilis R Been
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:39
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A PROCESS OF MAKING BAGS WHICH COMPRISES FORMING A GUSSETED TUBE OF BAG STOCK THAT IS ADAPTED TO BE FLATLY DISPOSED; CUTTING NOTCHES FROM EACH OF THE CORNERS OF SAID TUBE ACROSS ITS GUSSETED PORTIONS WHILE IT IS FLATLY DISPOSED SO AS TO COMPLETELY REMOVE ALL OF THE GUSSETED MATERIAL FROM SAID CORNERS AND LEAVE NOTCHED-OUT CORNERS AT EACH OF THE SIDES OF SAID BAG AND A FLAP EXTENDING FROM THE CENTER OF EACH NON-GUSSETED WALL IN SAID TUBE; FOLDING EACH OF SAID FLAPS OVER ON THE PORTION OF THE TUBE WALL FROM WHICH IT EXTENDS SO AS TO LIE BETWEEN THE GUSSETS ON THE OUTSIDE OF SAID TUBE WALL AND FORM AN OPEN BAG; AND CLOSING THE ENDS OF SAID BAG SHUT BY SEALING ITS END WITH SUITABLE MEANS WHILE SAID FLAPS ARE FOLDED OVER AND LAID BACK ON SAID WALLS.
Claim 2
Dependent Claim
142 words
A PROCESS OF MAKING BAGS WHICH COMPRISES FORMING A GUSSETED TUBE OF BAG STOCK THAT IS ADAPTED TO BE FLATLY DISPOSED; CUTTING NOTCHES FROM EACH OF THE CORNERS OF SAID TUBE ACROSS ITS GUSSETED PORTIONS WHILE IT IS FLATLY DISPOSED SO AS TO COMPLETELY REMOVE ALL OF THE GUSSETED MATERIAL FROM SAID CORNERS AND LEAVE NOTCHED-OUT CORNERS AT EACH OF THE SIDES OF SAID BAG AND A FLAP EXTENDING FROM THE CENTER OF EACH NON-GUSSETED WALL IN SAID TUBE; FOLDING EACH OF SAID FLAPS OVER ON THE PORTION OF THE TUBE WALL FROM WHICH IT EXTENDS SO AS TO LIE BETWEEN THE GUSSETS ON THE OUTSIDE OF SAID TUBE WALL AND FORM AN OPEN BAG; AND CLOSING THE ENDS OF SAID BAG SHUT BY SEALING ITS END WITH SUITABLE MEANS WHILE SAID FLAPS ARE FOLDED OVER AND LAID BACK ON SAID WALLS.
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) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |