Patent US2805973A successfully refreshed from Google Patents.
US2805973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making packaging materials
Assignee: Central States Paper and Bag Co
•
Filing: 1954-05-14
•
Granted: 1957-09-10
•
Expires: 1974-05-14
Abstract
No abstract record available.
Inventors
- 👤 Arthur P Klasing
- 👤 William J Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:54
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/13; B29C66/137; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/30; B29C65/305; B29C65/74; B29C65/741; B29C65/7411; B29C65/7412; B29C65/743; B29C65/7439; B29C65/7441; B29C66/11; B29C66/112; B29C66/1122; B29C66/20; B29C66/24; B29C66/244; B29C66/2442; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/432; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81415; B29C66/81417; B29C66/83; B29C66/832; B29C66/8322; B29C66/836; B29C66/84; B29C66/843; B29C66/8432; B29C66/841; B29C66/8412; B29C66/84121; B31; B31B; B31B2155/00; B31B2155/003; B31B2160/00; B31B2160/10; B31B2160/106; B31B2241/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1054; Y10T156/1084; Y10T156/1087
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
THE METHOD OF MAKING A FALT CONTAINER WHICH COMPRISES UNWINDING TWO WEBS OF THERMOPLASTIC FILM WHICH ARE CAPABLE OF FUSING TOGETHER UNDER HEAT, PASSING SAID WEBS IN MARGINALLY REGISTERING SUPERPOSED RELATION OVER A ROLLER, APPLYING HEATED KNIFE EDGES TO THE MARGINS OF SAID WEBS AS SAID MARGINS PASS OVER SAID ROLLER TO THEREBY SEAL THEM TOGETHER IN A NARROW MARGINAL SEAM, AND APPLYING A HEATED KNIFE EDGE TO THE WEB AT A PORTION
Claim 2
Independent Claim
73 words
THE METHOD OF MAKING A FALT CONTAINER WHICH COMPRISES UNWINDING TWO WEBS OF THERMOPLASTIC FILM WHICH ARE CAPABLE OF FUSING TOGETHER UNDER HEAT, PASSING SAID WEBS IN MARGINALLY REGISTERING SUPERPOSED RELATION OVER A ROLLER, APPLYING HEATED KNIFE EDGES TO THE MARGINS OF SAID WEBS AS SAID MARGINS PASS OVER SAID ROLLER TO THEREBY SEAL THEM TOGETHER IN A NARROW MARGINAL SEAM, AND APPLYING A HEATED KNIFE EDGE TO THE WEB AT A PORTION
References Cited (Backward Citations)
US2466387A
Cited
US2257823A
Cited
US2444685A
Cited
US2409100A
Cited
US2623681A
Cited
US2623680A
Cited
US2645591A
Cited
US2679280A
Cited
US2749817A
Cited
US2740740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |