Patent US3247041A successfully refreshed from Google Patents.
US3247041A
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Method and apparatus for heat sealing thermoplastic material by radiant energy
Assignee: Union Carbide Corp
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Filing: 1963-05-28
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Granted: 1966-04-19
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Expires: 1983-05-28
Abstract
No abstract record available.
Inventors
- 👤 William E Henderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:21
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C65/00; B29C65/02; B29C65/14; B29C65/1429; B29C65/1435; B29C65/1477; B29C65/18; B29C65/24; B29C65/245; B29C66/343; B29C66/40; B29C66/41; B29C66/43; B29C66/70; B29C66/73; B29C66/733; B29C66/7336; B29C66/73365; B29C66/73366; B29C66/737; B29C66/7371; B29C66/73711; B29C66/73713; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/812; B29C66/8126; B29C66/81266; B29C66/81267; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83421; B29C65/1403; B29C65/1412; B29C66/71; B29C66/8351; B29C66/83511; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/10; B29K2023/12; B29K2027/00; B29K2027/06; B29K2995/00; B29K2995/0037; B29K2995/005; B29K2995/0051; B29K2995/0053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
METHOD OF PERMANENTLY HEAT SEALING TRANSPARENT FILMS COMPOSED OF THERMOPLASTIC MATERIAL, WHICH COMPRISES PRESSING PLIES OF SUCH MATERIAL TOGETHER IN OVERLAPPING RELATION AGAINST A RADIANT HEAT ABSORBENT BLACK MARK ON A WHITE SUPPORT, AND EXPOSING THE SO-PRESSED MATERIAL TO A REMOTE SOURCE OF RADIANT ENERGY OF SUFFICIENT INTENSITY TO CAUSE THE PLIES OF SUCH MATERIAL TO FUSE AND PERMANENTLY SEAL TOGETHER ONLY IN THE AREA OPPOSITE SUCH MARK BY VIRTUE OF RADIANT HEAT ABSORBED THEREBY FROM SUCH RADIATION, AND FINALLY SEPARATING THE SO-SEALED PLIES AND THE SUPPORT FROM EACH OTHER AFTER THE SEALING OPERATION.
Claim 2
Dependent Claim
94 words
METHOD OF PERMANENTLY HEAT SEALING TRANSPARENT FILMS COMPOSED OF THERMOPLASTIC MATERIAL, WHICH COMPRISES PRESSING PLIES OF SUCH MATERIAL TOGETHER IN OVERLAPPING RELATION AGAINST A RADIANT HEAT ABSORBENT BLACK MARK ON A WHITE SUPPORT, AND EXPOSING THE SO-PRESSED MATERIAL TO A REMOTE SOURCE OF RADIANT ENERGY OF SUFFICIENT INTENSITY TO CAUSE THE PLIES OF SUCH MATERIAL TO FUSE AND PERMANENTLY SEAL TOGETHER ONLY IN THE AREA OPPOSITE SUCH MARK BY VIRTUE OF RADIANT HEAT ABSORBED THEREBY FROM SUCH RADIATION, AND FINALLY SEPARATING THE SO-SEALED PLIES AND THE SUPPORT FROM EACH OTHER AFTER THE SEALING OPERATION.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |