Patent US3536040A successfully refreshed from Google Patents.
Patent US3074544A successfully refreshed from Google Patents.
US3074544A
Expired / Lapsed
US
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Combination package
Assignee: 3M Co
•
Filing: 1958-12-22
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Granted: 1963-01-22
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Expires: 1978-12-22
Abstract
No abstract record available.
Inventors
- 👤 Bollmeier Emil Wayne
- 👤 Leo F Vokaty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:24
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/004; B29C65/00; B29C65/76; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/20; B29C66/21; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B65; B65D; B65D81/00; B65D81/32; B65D81/3261; B65D81/3266; B29C65/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A MULTIPLE COMPARTMENT FLEXIBLE UNITARY PACKAGE FOR COMPARTMENTALIZED ACCOMMODATION AND SELECTIVE ADMIXTURE OF AT LEAST TWO FLUENT MATERIALS, COMPRISING A NORMALLY FLAT ENVELOPE OF STRONG FLEXIBLE HEAT SEALABLE SHEET MATERIAL, TWO OPPOSING SIDEWALLS OF SAID ENVELOPES BEING JOINED BY HEAT SEALING TO FORM A TRANSVERSELY EXTENDING RUPTURABLE SEAM SEPARATING THE INTERIOR OF SAID ENVELOPE INTO INDIVIDUAL COMPARTMENTS, SAID SEAM INCLUDING MASKING MEANS IN THE FORM OF A SUBSTANTIALLY UNIFORMLY OPEN WEB INTERPOSED BETWEEN SAID SIDEWALLS AND THROUGH THE OPENINGS OF WHICH SAID SIDEWALLS ARE HEAT SEALED, SAID WEB REDUCING TO SUBSTANTIALLY LESS THAN ITS TOTAL AREA THE AREA OF SAID SEAM OVER WHICH JOINDER OF SAID SIDEWALLS IS EFFECTED.
Claim 2
Dependent Claim
109 words
A MULTIPLE COMPARTMENT FLEXIBLE UNITARY PACKAGE FOR COMPARTMENTALIZED ACCOMMODATION AND SELECTIVE ADMIXTURE OF AT LEAST TWO FLUENT MATERIALS, COMPRISING A NORMALLY FLAT ENVELOPE OF STRONG FLEXIBLE HEAT SEALABLE SHEET MATERIAL, TWO OPPOSING SIDEWALLS OF SAID ENVELOPES BEING JOINED BY HEAT SEALING TO FORM A TRANSVERSELY EXTENDING RUPTURABLE SEAM SEPARATING THE INTERIOR OF SAID ENVELOPE INTO INDIVIDUAL COMPARTMENTS, SAID SEAM INCLUDING MASKING MEANS IN THE FORM OF A SUBSTANTIALLY UNIFORMLY OPEN WEB INTERPOSED BETWEEN SAID SIDEWALLS AND THROUGH THE OPENINGS OF WHICH SAID SIDEWALLS ARE HEAT SEALED, SAID WEB REDUCING TO SUBSTANTIALLY LESS THAN ITS TOTAL AREA THE AREA OF SAID SEAM OVER WHICH JOINDER OF SAID SIDEWALLS IS EFFECTED.
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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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |