US2628204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for mixing materials
Assignee: AT&T Inc
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Filing: 1950-05-13
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Granted: 1953-02-10
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Expires: 1970-05-13
Abstract
No abstract record available.
Inventors
- 👤 Alvin N Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:32
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/70; B01F25/72; B01F25/721
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A METHOD OF MIXING PLASTICIZING MATERIALS WITH THERMOPLASTIC MATERIALS, WHICH INCLUDES CONTINUOUSLY DROPPING A POWDERED THERMOPLASTIC MATERIAL IN A SHEET-LIKE CURTAIN, AND FORCING A LIQUID PLASTICIZER MATERIAL THROUGH A BAFFLED PASSAGEWAY IN FINELY DIVIDED, AIR-SUSPENDED FORM
Claim 2
Independent Claim
36 words
A METHOD OF MIXING PLASTICIZING MATERIALS WITH THERMOPLASTIC MATERIALS, WHICH INCLUDES CONTINUOUSLY DROPPING A POWDERED THERMOPLASTIC MATERIAL IN A SHEET-LIKE CURTAIN, AND FORCING A LIQUID PLASTICIZER MATERIAL THROUGH A BAFFLED PASSAGEWAY IN FINELY DIVIDED, AIR-SUSPENDED FORM
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) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |