US2633443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of heatsealing
Assignee: Individual
•
Filing: 1949-07-14
•
Granted: 1953-03-31
•
Expires: 1969-07-14
Abstract
No abstract record available.
Inventors
- 👤 Langer Nicholas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:54
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/82; B29C66/824; B29C66/8242; B29C65/00; B29C65/02; B29C65/18; B29C65/22; B29C65/221; B29C65/224; B29C65/34; B29C65/3404; B29C65/3444; B29C65/3456; B29C65/346; B29C65/3468; B29C65/3472; B29C65/3476; B29C65/36; B29C65/3604; B29C65/3656; B29C65/3672; B29C65/3676; B29C65/368; B29C65/38; B29C65/48; B29C65/52; B29C65/54; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/47; B29C66/472; B29C66/4722; B29C66/70; B29C66/72; B29C66/723; B29C66/7232; B29C66/72321; B29C66/73; B29C66/739; B29C66/7392; B29C66/81; B29C66/818; B29C66/8187; B29C66/81871; B29C66/83; B29C66/832; B29C66/8322; B29C66/90; B29C66/91; B29C66/914; B29C66/9161; B29C66/91651; B29C66/91653; B29C66/432; B29C66/4322; B29C66/72327; B29C66/72328; B29C66/92; B29C66/924; B29C66/9261; B29C66/92651; B29C66/94; B29C66/944; B29L; B29L2009/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
THE METHOD OF HEATSEALING COMPOSITE SHEETS INCLUDING A METALLIC LAYER AND A THERMOPLASTIC LAYER ALONG A POSITIVELY DEFINED STRIP WHICH COMPRISES BRINGING THE THERMOPLASTIC LAYERS OF THE SHEETS INTO FACE TO FACE POSITION IN THE REGION OF SAID STRIP, PRESSING AN ELECTRODE AGAINST EACH END OF ONE OF THE METALLIC LAYERS OF SAID STRIP TO MAKE ELECTRICAL CONNECTION THERETO, PASSING AN ELECTRIC CURRENT BETWEEN SAID ELECTRODES AND THROUGH THE METALLIC LAYER THEREBETWEEN CONSTITUTING A HEATER ELEMENT, SAID CURRENT BEING OF SUFFICIENT DURATION AND INTENSITY TO HEAT COEXTENSIVE STRIPS OF THE THERMOPLASTIC LAYERS TO HEATSEALING TEMPERATURES, APPLYING PRESSURE TO SAID SHEETS SUBSTANTIALLY THROUGHOUT THE AREA OF SAID STRIP TO CAUSE HEATSEALING OF THE THERMOPLASTIC LAYERS AND PRODUCTION OF A SEAM COEXTENSIVE WITH SAID STRIP WHICH PERNAMENTLY INCORPORATES SAID HEATER ELEMENT, AND THEN REMOVING SAID ELECTRODES FROM THE METALLIC LAYER AND DISCONTINUING SAID PRESSURE.
Claim 2
Independent Claim
142 words
THE METHOD OF HEATSEALING COMPOSITE SHEETS INCLUDING A METALLIC LAYER AND A THERMOPLASTIC LAYER ALONG A POSITIVELY DEFINED STRIP WHICH COMPRISES BRINGING THE THERMOPLASTIC LAYERS OF THE SHEETS INTO FACE TO FACE POSITION IN THE REGION OF SAID STRIP, PRESSING AN ELECTRODE AGAINST EACH END OF ONE OF THE METALLIC LAYERS OF SAID STRIP TO MAKE ELECTRICAL CONNECTION THERETO, PASSING AN ELECTRIC CURRENT BETWEEN SAID ELECTRODES AND THROUGH THE METALLIC LAYER THEREBETWEEN CONSTITUTING A HEATER ELEMENT, SAID CURRENT BEING OF SUFFICIENT DURATION AND INTENSITY TO HEAT COEXTENSIVE STRIPS OF THE THERMOPLASTIC LAYERS TO HEATSEALING TEMPERATURES, APPLYING PRESSURE TO SAID SHEETS SUBSTANTIALLY THROUGHOUT THE AREA OF SAID STRIP TO CAUSE HEATSEALING OF THE THERMOPLASTIC LAYERS AND PRODUCTION OF A SEAM COEXTENSIVE WITH SAID STRIP WHICH PERNAMENTLY INCORPORATES SAID HEATER ELEMENT, AND THEN REMOVING SAID ELECTRODES FROM THE METALLIC LAYER AND DISCONTINUING SAID PRESSURE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |