Patent US3420924A successfully refreshed from Google Patents.
US3420924A
Expired / Lapsed
US
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Method for blow molding a container incorporating pearlescent material
Assignee: Monsanto Co
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Filing: 1965-05-13
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Granted: 1969-01-07
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Expires: 1985-05-13
Abstract
No abstract record available.
Inventors
- 👤 Robert B Mason
- 👤 Edwin W Fuerst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:13
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C49/00; B29C49/071; B29C48/001; B29C48/0017; B29C48/12; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C2949/00; B29C2949/07; B29C2949/074; B29C2949/0741; B29C2949/076; B29C2949/0761; B29C2949/0764
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A METHOD OF MAKING A CONTAINER SAID METHOD COMPRISING THE STEPS OF: (A) COMPOUNDING A MOLDABLE MIXTURE OF A THERMOPLASTIC WITH A SMALL AMOUNT OF A PEARLESCENT MATERIAL, A FACE DIAMETER BETWEEN ABOUT 3 TO 70 MICRONS AND A THICKNESS FROM ABOUT 0.5 TO 5 MICRONS; (B) CAUSING SAID MOLDABLE MIXTURE TO FLOW ALONG A PASSAGE TO ORIENT THE FACES OF THE PLATELETS IN THE THERMOPLASTICE IN THE DIRECTION OF FLOW; (C) FORCING SAID MOLDABLE MIXTURE CONTAINING SAID PLATELETS THROUGH AN ANNULAR OUTLET HAVING RADIAL PROTRUSIONS EXTENDING INTO THE OUTLET, TO CHANGE THE ORIENTATION OF A PORTION OF THE PLATELETS ADJACENT THE PROTRUSIONS, AND TO FORM A TUBULAR PARISON HAVING ON ITS OUTER SURFACE A SERIES OF AXIALLY EXTENDING GROOVES, CONTAINING PEARLESCENT SELECTIVELY ORIENTED IN SIDE PORTIONS OF THE GROOVES; AND (D) GENERATING A PRESSURE WITHIN THE PARISON TO EXPAND THE PARISON AND FORCE THE SIDES OF AT LEAST A PORTION OF THE GROOVES OUTWARD IN THE DIRECTION OF EXPANSION AGAINST THE WALLS OF A MOLD CAVITY.
Claim 2
Independent Claim
167 words
A METHOD OF MAKING A CONTAINER SAID METHOD COMPRISING THE STEPS OF: (A) COMPOUNDING A MOLDABLE MIXTURE OF A THERMOPLASTIC WITH A SMALL AMOUNT OF A PEARLESCENT MATERIAL, A FACE DIAMETER BETWEEN ABOUT 3 TO 70 MICRONS AND A THICKNESS FROM ABOUT 0.5 TO 5 MICRONS; (B) CAUSING SAID MOLDABLE MIXTURE TO FLOW ALONG A PASSAGE TO ORIENT THE FACES OF THE PLATELETS IN THE THERMOPLASTICE IN THE DIRECTION OF FLOW; (C) FORCING SAID MOLDABLE MIXTURE CONTAINING SAID PLATELETS THROUGH AN ANNULAR OUTLET HAVING RADIAL PROTRUSIONS EXTENDING INTO THE OUTLET, TO CHANGE THE ORIENTATION OF A PORTION OF THE PLATELETS ADJACENT THE PROTRUSIONS, AND TO FORM A TUBULAR PARISON HAVING ON ITS OUTER SURFACE A SERIES OF AXIALLY EXTENDING GROOVES, CONTAINING PEARLESCENT SELECTIVELY ORIENTED IN SIDE PORTIONS OF THE GROOVES; AND (D) GENERATING A PRESSURE WITHIN THE PARISON TO EXPAND THE PARISON AND FORCE THE SIDES OF AT LEAST A PORTION OF THE GROOVES OUTWARD IN THE DIRECTION OF EXPANSION AGAINST THE WALLS OF A MOLD CAVITY.
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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) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |