US3579620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blow molding
Assignee: Innopak Corp
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Filing: 1968-11-26
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Granted: 1971-05-18
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Expires: 1988-11-26
Abstract
Abstract PARISON PINCH OFF SURFACES OF A BLOW MOLD AND/OR THE AREA OF THE MOLD DEFINING AN OPENING EXTENDING THROUGH THE BODY OF A HANDLEWARE CONTAINING ARE KEPT AT ELEVATED TEMPERATURE IN COMPARISON WITH REMAINING COOLED PORTIONS OF THE MOLD DURING CLOSING OF THE MOLD SECTIONS AND FORMATION OF THE ARTICLE, IN ORDER TO FACILITATE SUBSEQUENT REMOVAL OF WASTE FLASH WHICH IS INTEGRALLY FORMED WITH THE ARTICLE IN THESE AREAS OF THE MOLD.
Inventors
- 👤 Lennart K Pettersson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:03
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/48; B29C49/50; B29C49/02; B29C49/04; B29C49/4802; B29C2049/4805; B29L; B29L2031/00; B29L2031/46; B29L2031/463; B29L2031/712; B29L2031/7158
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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |