Patent US3145823A successfully refreshed from Google Patents.
US3374500A
Expired / Lapsed
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Apparatus for making thin wall foamed polymeric articles
Assignee: Atlantic Richfield Co
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Filing: 1966-07-08
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Granted: 1968-03-26
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Expires: 1986-07-08
Abstract
No abstract record available.
Inventors
- 👤 John W Drenning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:03
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/38; B29C44/44; B29C44/445; B29C41/00; B29C41/006; B29C44/3415; B29C44/3426; B29K; B29K2105/00; B29K2105/04; B29L; B29L2031/00; B29L2031/712; B29L2031/7132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
APPARATUS FOR EXPANDING AND FUSING EXPANDABLE BEAD-LIKE THERMOPLASTIC MATERIALS INTO SELF-SUSTAINING ARTICLES COMPRISING COMPLEMENTARY CORE AND CAVITY MOLD ELEMENTS ADAPTED, WHEN CLOSED, TO DEFINE A MOLDING SPACE THEREBETWEEN, MEANS FOR APPLYING AN ELECTRICAL POTENTIAL TO SAID CORE MOLD ELEMENT, MEANS FOR CONTACTING SAID CORE MOLD ELEMENT WITH A SURPLUS OF BEADS TO COAT THE WALL OF THE CORE WITH ADHERING BEADS, MEANS FOR CLOSING SAID MOLD AND
Claim 2
Dependent Claim
67 words
APPARATUS FOR EXPANDING AND FUSING EXPANDABLE BEAD-LIKE THERMOPLASTIC MATERIALS INTO SELF-SUSTAINING ARTICLES COMPRISING COMPLEMENTARY CORE AND CAVITY MOLD ELEMENTS ADAPTED, WHEN CLOSED, TO DEFINE A MOLDING SPACE THEREBETWEEN, MEANS FOR APPLYING AN ELECTRICAL POTENTIAL TO SAID CORE MOLD ELEMENT, MEANS FOR CONTACTING SAID CORE MOLD ELEMENT WITH A SURPLUS OF BEADS TO COAT THE WALL OF THE CORE WITH ADHERING BEADS, MEANS FOR CLOSING SAID MOLD AND
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |