US3454450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic sealing apparatus using combined heat and ultra-sonic energy
Assignee: Millennium Petrochemicals Inc
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Filing: 1966-01-03
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Granted: 1969-07-08
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Expires: 1986-01-03
Abstract
No abstract record available.
Inventors
- 👤 Frederick S Tyrrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:06
CPC Classifications
C; C04; C04B; C04B14/00; C04B14/02; C04B14/04; C04B14/20; C04B14/202; B; B29; B29C; B29C65/00; B29C65/02; B29C65/06; B29C65/08; B29C65/081; B29C65/18; B29C65/22; B29C65/221; B29C65/224; B29C65/72; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/341; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43121; B29C66/70; B29C66/73; B29C66/737; B29C66/7373; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/812; B29C66/8126; B29C66/83; B29C66/832; B29C66/8322; B29C66/90; B29C66/95; B29C66/951; B29C66/9513; B29K; B29K2995/00; B29K2995/0003; B29K2995/0008; B29L; B29L2031/00; B29L2031/712; B29L2031/7128; Y; Y10; Y10S; Y10S220/00; Y10S220/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3022814A
Cited
US3146141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |