US2978008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat sealing method and apparatus
Assignee: Akzo Nobel UK PLC
•
Filing: 1956-06-01
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Granted: 1961-04-04
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Expires: 1976-06-01
Abstract
No abstract record available.
Inventors
- 👤 John D Conti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:36
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/022; B29C65/026; B29C65/10; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/45; B29C66/80; B29C66/81; B29C66/816; B29C66/8161; B29C66/82; B29C66/822; B29C66/8225; B29C66/826; B29C66/8266; B29C66/82661; B29C66/83; B29C66/832; B29C66/8322; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921
Claims Analysis
Total Claims: 0
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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) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |