US3576694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of,and apparatus for forming a linear seal between two layers of a thermoplastic material
Assignee: Contex Ltd
•
Filing: 1967-10-23
•
Granted: 1971-04-27
•
Expires: 1987-10-23
Abstract
Abstract SECTION AND INTERCEPTING THE PATH OF PROGRESS SUCCESSIVELY BY DIRECTING A PLURALITY OF JETS OF HOT AIR FROM BOTH SIDES OF THE JUXTAPOSED LAYERS. A METHOD OF FORMING A LINEAR SEAL BETWEEN TWO LAYERS OF A THERMOPLASTIC OR THERMOPLASTIC-COATED MATERIAL, COMPRISES GRIPPING THE LAYERS IN JUXTAPOSED CONDITION AND PROGRESSING SAME IN SUCH CONDITION WITH THE GRIP EXTENDING LINEARLY AS PROGRESS IS EFFECTED TO PROVIDE A GRIPPED
Inventors
- 👤 Samuel Greisman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:51
CPC Classifications
B; B65; B65B; B65B51/00; B65B51/10; B65B51/20; B29; B29C; B29C65/00; B29C65/02; B29C65/10; B29C65/78; B29C65/7858; B29C65/7861; B29C65/787; B29C65/7873; B29C66/00; B29C66/01; B29C66/02; B29C66/024; B29C66/0242; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/70; B29C66/72; B29C66/723; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/83; B29C66/836; B29C66/84; B29C66/841; B29C66/8412; B29C66/84123; B29C66/7232; B29C66/72327; B29C66/72328; B29K; B29K2711/00; B29K2711/12; B29K2711/123; B29L; B29L2031/00; B29L2031/712; B29L2031/7128; B29L2031/7162
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |