US3792144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packaging process
Assignee: Dow Chemical Co
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Filing: 1969-02-05
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Granted: 1974-02-12
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Expires: 1989-02-05
Abstract
Abstract Method for blow molding thermoplastic containers, filling the same with sterile product immediately upon their formation while the containers are yet in a sterile condition and sealing the filled containers while they still remain sterile. All of the steps are preformed while exposing the interior of a parison and the container formed therefrom only to a sterile atmosphere.
Inventors
- 👤 F Burkett
- 👤 R Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:51
CPC Classifications
B; B67; B67C; B67C7/00; B67C7/0073; B29; B29C; B29C49/00; B29C49/02; B29C49/04; B29C49/42; B29C49/46; B29C49/48; B29C49/4802; B29C49/4817; B65; B65B; B65B3/00; B65B3/02; B65B3/022; B65B55/00; B65B55/02; B65B55/04; B65B55/06; B29C2049/4602; B29C2049/4635; B29C2791/00; B29C2791/004; B29C2791/005; B65B3/26; B65B3/30
Claims Analysis
Total Claims: 0
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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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |