US3823055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic cleaning and welding apparatus
Assignee: United States Department of the Army
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Filing: 1972-07-18
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Granted: 1974-07-09
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Expires: 1992-07-18
Abstract
Abstract Dry contaminants on seal interface surfaces of flexible packages are removed by causing the interface surfaces to be vibrated by ultrasonic energy for a brief period of time prior to sealing.
Inventors
- 👤 G Schulz
- 👤 R Mansur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:18
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C65/00; B29C65/02; B29C65/08; B29C66/02; B29C66/022; B29C66/0222; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43121; B29C66/70; B29C66/71; B29C66/73; B29C66/737; B29C66/7373; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/816; B29C66/8161; B29C66/82; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; B29C66/84; B29C66/849; B65; B65B; B65B51/00; B65B51/10; B65B51/22; B65B51/225; B65B55/00; B65B55/24; B29C66/90; B29C66/95; B29C66/951; B29C66/9513
Claims Analysis
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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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |