US3193978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat sealing thermoplastic packages
Assignee: Phillips Petroleum Co
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Filing: 1962-01-22
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Granted: 1965-07-13
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Expires: 1982-01-22
Abstract
No abstract record available.
Inventors
- 👤 Bader Julius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:53
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/83; B29C66/834; B29C66/8351; B29C66/83511; B29C65/00; B29C65/02; B29C65/18; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/13; B29C66/131; B29C66/20; B29C66/24; B29C66/242; B29C66/2424; B29C66/24243; B29C66/24244; B29C66/40; B29C66/47; B29C66/472; B29C66/4722; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5346; B29C66/53461; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/81; B29C66/816; B29C66/8161; B29C66/8341; B29C66/83421; B65; B65B; B65B7/00; B65B7/16; B65B7/28; B65B7/2807; B65B7/2842; B65B7/2878; B29C66/71; B29C66/72; B29C66/723; B29C66/7232; B29C66/72321; B29C66/72327; B29C66/72328; B29C66/82; B29C66/822; B29C66/8223; B29C66/90; B29C66/91; B29C66/914; B29C66/9141; B29C66/91421; B29C66/93; B29C66/934
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
A METHOD FOR SEALING PACKAGES WHICH COMPRISES: PASSING A FILE OF PACKAGES TO BE SEALED THROUGH A SEALING ZONE; PASSING A COVER SHEET CONTINUOUSLY THROUGH A COVER PREPARING ZONE; IN SAID COVER PREPARING ZONE ROTATING A KNIFE TO FORM A PAIR OF CLOSELY SPACED, LONGITUDINAL SLITS IN SAID SHEET AT REGULAR LONGITUDINALLY SPACED INTERVALS; HEATING A TEAR STRIP AND APPLYING SAID STRIP TO SAID SHEET LONGITUDINALLY THEREOF EXTENDING BETWEEN SAID PAIRS OF SLITS; CUTTING SAID SHEET AND SAID APPLIED TEAR STRIP AT SAID PAIRS OF SLITS THEREBY FORMING INDIVIDUAL PACKAGE COVERS EACH HAVING A TEAR STRIP AND A STARTING TAB FORMED BY SAID SLITS; AND APPLYING SAID COVERS TO SAID PACKAGES AND SEALING THERETO.
References Cited (Backward Citations)
US2638724A
Cited
US2538564A
Cited
US2699285A
Cited
US2815620A
Cited
US2919060A
Cited
US3001348A
Cited
US2958168A
Cited
US3017729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |