US3113831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a double-walled container
Assignee: Phillips Petroleum Co
•
Filing: 1961-01-26
•
Granted: 1963-12-10
•
Expires: 1981-01-26
Abstract
No abstract record available.
Inventors
- 👤 Harold D Coale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:14
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/24; B29C2949/00; B29C2949/07; B29C2949/0715; B29C49/02; B29C49/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A METHOD OF FORMING A DOUBLE-WALLED, OPEN-END, BLOWN CONTAINER COMPRISING THE STEPS OF: FORMING AN OUTER CONTAINER WALL BY MOLDING; INSERTING A PARISON OF AN EXPANDABLE THERMOPLASTIC MATERIAL INTO SAID OUTER CONTAINER THROUGH THE OPEN END THEREOF; EXPANDING SAID PARISON BY APPLYING FLUID UNDER PRESSURE TO THE INTERIOR THEREOF; CONCURRENTLY FURTHER EXPANDING THE OPEN END PORTION OF SAID EXPANDING PARISON INTO SEALING ENGAGEMENT WITH THE OPEN
Claim 2
Independent Claim
66 words
A METHOD OF FORMING A DOUBLE-WALLED, OPEN-END, BLOWN CONTAINER COMPRISING THE STEPS OF: FORMING AN OUTER CONTAINER WALL BY MOLDING; INSERTING A PARISON OF AN EXPANDABLE THERMOPLASTIC MATERIAL INTO SAID OUTER CONTAINER THROUGH THE OPEN END THEREOF; EXPANDING SAID PARISON BY APPLYING FLUID UNDER PRESSURE TO THE INTERIOR THEREOF; CONCURRENTLY FURTHER EXPANDING THE OPEN END PORTION OF SAID EXPANDING PARISON INTO SEALING ENGAGEMENT WITH THE OPEN
References Cited (Backward Citations)
US1127381A
Cited
US2805787A
Cited
US2837232A
Cited
US2951264A
Cited
US3023461A
Cited
US2981430A
Cited
US3002646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-09 | 1967-06-10 | 1967-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-09 | 1971-06-10 | 1971-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-09 | 1975-06-10 | 1975-12-10 | $7700.00 | Window Closed / Lapsed |