US3348358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sealing a container
Assignee: WR Grace and Co
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Filing: 1956-06-15
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Granted: 1967-10-24
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Expires: 1976-06-15
Abstract
No abstract record available.
Inventors
- 👤 Martin M Sternau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:21
CPC Classifications
B; B65; B65B; B65B7/00; B65B7/16; B65B7/28; B65B7/2842; B65B7/2885; B29; B29C; B29C43/00; B29C43/32; B29C43/36; B29C43/361; B29C2043/3615; B29C2043/3618; B29L; B29L2031/00; B29L2031/709; B29L2031/7096
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
A METHOD OF SEALING A CONTAINER COMPRISING THE STEPS OF PLACING A SHEET OF HEAT SHRINKABLE PLASTIC FILM OVER THE MOUTH OF A CONTAINER, SAID SHEET BEING SUBSTANTIALLY LARGER THAN THE OPENING OF THE MOUTH OF SAID CONTAINER, GATHERING THE EDGE PORTION OF SAID FILM INTO DEPENDING PLEATS, SHIELDING SAID SHEET ACROSS THE MOUTH OF SAID CONTAINER AND SIMULTANEOUSLY APPLYING HEAT TO THE RIM AREA OF SAID SHEET TO SHRINK SAID SHEET SELECTIVELY PRIMARILY AT ITS RIM AREA TO SEAL THE CONTAINER.
References Cited (Backward Citations)
US2732116A
Cited
US825116A
Cited
US1271944A
Cited
US1746669A
Cited
US1891866A
Cited
US1952530A
Cited
US2141833A
Cited
US2263152A
Cited
US2409788A
Cited
US2447983A
Cited
US2447855A
Cited
US2608334A
Cited
US2595046A
Cited
US2707588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |