US3084489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sealing thermoplastic film overwrap
Assignee: Phillips Petroleum Co
•
Filing: 1959-12-28
•
Granted: 1963-04-09
•
Expires: 1979-12-28
Abstract
No abstract record available.
Inventors
- 👤 Charles L Seefluth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:29
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/10; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43121; B29C66/70; B29C66/73; B29C66/737; B29C66/7377; B29C66/73773; B29C66/73774; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/814; B29C66/8145; B29C66/81455; B29C66/83; B29C66/836; B29C66/84; B29C66/849; B29C66/90; B29C66/91; B29C66/914; B29C66/9141; B29C66/91431; B29C66/919; B29C66/9192; B29C66/91921; B29C66/94; B29C66/949; B65; B65B; B65B51/00; B65B51/10; B65B51/20; B29C66/71; B29C66/82; B29C66/826; B29C66/8266; B29L; B29L2031/00; B29L2031/712; B29L2031/7162; B29L2031/7166
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
THE METHOD OF SEALING THERMOPLASTIC FILM OVERWRAP ON A PACKAGE WHICH COMPRISES PASSING SAID PACKAGE OVER A PERFORATED SURFACE SO THAT THE OVERLAPPED FILM IS SANDWICHED BETWEEN THE PACKAGE AND SAID SURFACE, AND PASSING HEATED GAS THROUGH THE PERFORATIONS IN SAID SURFACE IN AN AMOUNT TO FLOAT SAID PACKAGE AND TO HEAT SAID FILM ABOVE ITS CRYSTALLINE FREEZE POINT WHILE CONTINUOUSLY MOVING SAID PACKAGE OVER SAID SURFACE.
Claim 2
Independent Claim
67 words
THE METHOD OF SEALING THERMOPLASTIC FILM OVERWRAP ON A PACKAGE WHICH COMPRISES PASSING SAID PACKAGE OVER A PERFORATED SURFACE SO THAT THE OVERLAPPED FILM IS SANDWICHED BETWEEN THE PACKAGE AND SAID SURFACE, AND PASSING HEATED GAS THROUGH THE PERFORATIONS IN SAID SURFACE IN AN AMOUNT TO FLOAT SAID PACKAGE AND TO HEAT SAID FILM ABOVE ITS CRYSTALLINE FREEZE POINT WHILE CONTINUOUSLY MOVING SAID PACKAGE OVER SAID SURFACE.
References Cited (Backward Citations)
US1517434A
Cited
US1658489A
Cited
US2486759A
Cited
US2423237A
Cited
US2481602A
Cited
US2687698A
Cited
US2849347A
Cited
US2775677A
Cited
US2928220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |