Patent US3515707A successfully refreshed from Google Patents.
Patent US3579622A successfully refreshed from Google Patents.
US3579622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for blow molding plastic articles
Assignee: Innopak Corp
•
Filing: 1969-04-10
•
Granted: 1971-05-18
•
Expires: 1989-04-10
Abstract
Abstract A METHOD OF BLOW MOLDING A HOLLOW ARTCLE WHEREIN THE PARISON IS PREBLOWN AND THEN ALLOWED TO PARTIALLY DEFLATE AND SHRINK IN SIZE TO OBTAIN THE BENFIT OF STRETCHING DURING PRE-INFLATION WHILE AVOIDING CHILL MARKS IN THE FINISHED ARTICLE.
Inventors
- 👤 Charles H Shaw
- 👤 Robert G Strauss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:08
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/18; B29C49/02; B29C49/04; B29C49/04102; B29C49/04106; B29C49/0412; B29C49/42; B29C49/42392; B29C2793/00; B29C2793/0081; B29C33/00; B29C33/20; B29C33/26; B29C49/041; B29C49/08; B29C49/16; B29C49/1602; B29C49/76; B29C49/761
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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 |