US2649392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming seal in synthetic plastic packages
Assignee: KRAFT FOODS Co
•
Filing: 1950-03-30
•
Granted: 1953-08-18
•
Expires: 1970-03-30
Abstract
No abstract record available.
Inventors
- 👤 John M Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:53
CPC Classifications
B; B65; B65D; B65D77/00; B65D77/10; B65D77/20; B65D77/2024; B65D77/2028; B65D77/2032; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/30; B29C65/305; B29C65/76; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/13; B29C66/131; B29C66/20; B29C66/24; B29C66/242; B29C66/2424; B29C66/24243; B29C66/24244; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5346; B29C66/53461; B29C66/70; B29C66/71; B29C66/712; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81431; B29C66/83; B29C66/832; B29C66/8322; B29C66/84; B29C66/849; B29C66/90; B29C66/91; B29C66/914; B29C66/9141; B29C66/91421; B65B; B65B7/00; B65B7/16; B65B7/28; B65B7/2842; B65B7/2878; B29C66/54; B29C66/549; B29C66/919; B29C66/92; B29C66/929; B65D2577/00; B65D2577/10; B65D2577/20; B65D2577/2066; Y; Y10; Y10S; Y10S220/00; Y10S220/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
THE METHOD OF FORMING A SEAL IN A PACKAGE OF SYNTHETIC THERMOPLASTIC MATERIALS, SAID PACKAGE COMPRISING COMPONENT PARTS, ONE OF SAID PARTS CONSISTING OF CHLORINATED RUBBER, THE OTHER OF SAID PARTS CONSISTING OF VINYL CHLORIDE ACETATE, SAID COMPONENT PARTS BEING IMMISCIBLE UNDER HEAT SEALING CONDITIONS, WHICH METHOD COMPRISES COMPRESSING SAID COMPONENT PARTS TOGETH-
Claim 2
Independent Claim
53 words
THE METHOD OF FORMING A SEAL IN A PACKAGE OF SYNTHETIC THERMOPLASTIC MATERIALS, SAID PACKAGE COMPRISING COMPONENT PARTS, ONE OF SAID PARTS CONSISTING OF CHLORINATED RUBBER, THE OTHER OF SAID PARTS CONSISTING OF VINYL CHLORIDE ACETATE, SAID COMPONENT PARTS BEING IMMISCIBLE UNDER HEAT SEALING CONDITIONS, WHICH METHOD COMPRISES COMPRESSING SAID COMPONENT PARTS TOGETH-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |