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Patent US2935764A successfully refreshed from Google Patents.
US2935764A
Expired / Lapsed
US
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Method for blowing plastic bottles
Assignee: Plax Corp
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Filing: 1956-12-21
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Granted: 1960-05-10
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Expires: 1976-12-21
Abstract
No abstract record available.
Inventors
- 👤 Robert B Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:21
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/02; B29C49/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
THE METHOD OF FORMING A HOLLOW ARTICLE OF PLASTIC MATERIAL EMPLOYING A BLOW MOLD HAVING RELATIVELY NARROW AND WIDE MOLDING PORTIONS WHICH COMPRISES EXTRUDING AND SUSPENDING A TUBULAR LENGTH OF SOFTENED PLASTIC MATERAL, INTRODUCING A SUFFICIENT FLOW OF FLUID MEDIUM THROUGH SAID TUBULAR LENGTH OF MATERIAL TO PARTIALLY COLLAPSE A PORTION OF THE SUSPENDED LENGTH OF MATERIAL, CLOSING THE BLOW MOLD ABOUT THE SUSPENDED LENGTH OF MATERIAL
Claim 2
Independent Claim
67 words
THE METHOD OF FORMING A HOLLOW ARTICLE OF PLASTIC MATERIAL EMPLOYING A BLOW MOLD HAVING RELATIVELY NARROW AND WIDE MOLDING PORTIONS WHICH COMPRISES EXTRUDING AND SUSPENDING A TUBULAR LENGTH OF SOFTENED PLASTIC MATERAL, INTRODUCING A SUFFICIENT FLOW OF FLUID MEDIUM THROUGH SAID TUBULAR LENGTH OF MATERIAL TO PARTIALLY COLLAPSE A PORTION OF THE SUSPENDED LENGTH OF MATERIAL, CLOSING THE BLOW MOLD ABOUT THE SUSPENDED LENGTH OF MATERIAL
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |