US3279966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sanitary double wall bag
Assignee: Union Carbide Corp
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Filing: 1963-04-12
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Granted: 1966-10-18
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Expires: 1983-04-12
Abstract
No abstract record available.
Inventors
- 👤 William L Calvert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:57
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/40; B29C66/47; B29C66/474; B29C66/4742; B29C66/47421; B29C65/00; B29C65/02; B29C65/18; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/13; B29C66/131; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29C65/82; B29C65/8253; B29C66/70; B29C66/71; B29L; B29L2031/00; B29L2031/712; B29L2031/7148; B31; B31B; B31B2155/00; B31B2155/003; B31B2170/00; B31B2170/20; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
THE PROCESS OF FORMING SANITARY DOUBLE WALL BAGS COMPRISING THE STEPS OF FORMING A PLURALITY OF PAIRS OF CONTIGUOUS SHEETS, EACH OF SAID SHEETS HAVING AN OUTER SURFACE AND AN INNER, STERILE SURFACE IN CONTACT WITH AN INNER, STERILE SURFACE OF A CONTIGUOUS SHEET, WITHIN A STERILE ENVIRONMENT WITHDRAWING EACH O SAID SHEETS FROM CONTACT WITH THE SHEET WITH WHICH IT IS CONTIGUOUS, AND BRINGING THE OUTER SURFACE OF AT LEAST ONE SHEET IN EACH OF SAID PAIRS OF SHEETS IN CONTACT WITH A SURFACE OF ANOTHER SHEET TO FORM AT LEAST TWO PAIRS OF CONTINUGOUS SHEETS, EACH OF SAID PAIRS OF SHEETS HAVING AN OUTER STERILE SURFACE, BRINGING THE OUTER STERILE SURFACE OF ONE PAIR OF SHEETS INTO CONTACT WITH AN OUTER STERILE SURFACE OF ANOTHER PAIR OF SHEETS AND SEALING TOGETHER THE PERIPHERAL EDGES OF SAID ONE PAIR OF SHEETS TO SAID ANOTHER PAIR OF SHEETS, THEREBY FORMING A DOUBLE WALL BAG HAVING A STERILE INTERIOR ZONE.
Claim 2
Dependent Claim
159 words
THE PROCESS OF FORMING SANITARY DOUBLE WALL BAGS COMPRISING THE STEPS OF FORMING A PLURALITY OF PAIRS OF CONTIGUOUS SHEETS, EACH OF SAID SHEETS HAVING AN OUTER SURFACE AND AN INNER, STERILE SURFACE IN CONTACT WITH AN INNER, STERILE SURFACE OF A CONTIGUOUS SHEET, WITHIN A STERILE ENVIRONMENT WITHDRAWING EACH O SAID SHEETS FROM CONTACT WITH THE SHEET WITH WHICH IT IS CONTIGUOUS, AND BRINGING THE OUTER SURFACE OF AT LEAST ONE SHEET IN EACH OF SAID PAIRS OF SHEETS IN CONTACT WITH A SURFACE OF ANOTHER SHEET TO FORM AT LEAST TWO PAIRS OF CONTINUGOUS SHEETS, EACH OF SAID PAIRS OF SHEETS HAVING AN OUTER STERILE SURFACE, BRINGING THE OUTER STERILE SURFACE OF ONE PAIR OF SHEETS INTO CONTACT WITH AN OUTER STERILE SURFACE OF ANOTHER PAIR OF SHEETS AND SEALING TOGETHER THE PERIPHERAL EDGES OF SAID ONE PAIR OF SHEETS TO SAID ANOTHER PAIR OF SHEETS, THEREBY FORMING A DOUBLE WALL BAG HAVING A STERILE INTERIOR ZONE.
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |