US2593507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of molding nonmetallic powders
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1949-03-01
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Granted: 1952-04-22
•
Expires: 1969-03-01
Abstract
No abstract record available.
Inventors
- 👤 Wainer Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:14
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1315
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE METHOD OF MAKING A NON-METALLIC ARTICLE OF DESIRED SHAPE AND POROSITY WHICH COMPRISES HEATING TO A PLASTIC FLOWABLE STAGE WITHOUT DISTILLATION OF THE BINDER THEREIN, A MIXTURE COMPOSED OF 50 TO 65 PARTS BY VOLUME OF A NON-METALLIC NON-PLASTIC POWDER SUBSTANTIALLY FREE FROM UNCOMBINED METAL AND CAPABLE OF BEING VITRIFIED AND 35 TO 50 PARTS BY VOLUME OF A THERMOPLASTIC COMPLETELY DISTILLABLE BINDER CONTAINING A MAJOR PROPORTION OF A POLY-MONO-OLEFINIC THERMOPLASTIC RESIN, PRESSURE MOLDING THE THUS HEATED FLOWABLE MASS INTO DESIRED ARTICLE SHAPE, AND FIRING THE
Claim 2
Independent Claim
87 words
THE METHOD OF MAKING A NON-METALLIC ARTICLE OF DESIRED SHAPE AND POROSITY WHICH COMPRISES HEATING TO A PLASTIC FLOWABLE STAGE WITHOUT DISTILLATION OF THE BINDER THEREIN, A MIXTURE COMPOSED OF 50 TO 65 PARTS BY VOLUME OF A NON-METALLIC NON-PLASTIC POWDER SUBSTANTIALLY FREE FROM UNCOMBINED METAL AND CAPABLE OF BEING VITRIFIED AND 35 TO 50 PARTS BY VOLUME OF A THERMOPLASTIC COMPLETELY DISTILLABLE BINDER CONTAINING A MAJOR PROPORTION OF A POLY-MONO-OLEFINIC THERMOPLASTIC RESIN, PRESSURE MOLDING THE THUS HEATED FLOWABLE MASS INTO DESIRED ARTICLE SHAPE, AND FIRING THE
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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) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |