Patent US4840791A successfully refreshed from Google Patents.
Patent US2449185A successfully refreshed from Google Patents.
US3711279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for manufacture of sintering thin porous metallic sheets
Assignee: Office National d'Études et de Recherches Aérospatiales
•
Filing: 1970-02-04
•
Granted: 1973-01-16
•
Expires: 1990-02-04
Abstract
Abstract A BLANK IS PRODUCED BY SHAPING A MATERIAL COMPRISING AT LEAST ONE METALLIC POWDER AGGLOMERATED BY A SOLID BINDER. THE SOLID BINDER IS A RESIN WHICH IS INITIALLY LIQUID AND PRESENT THROUGHOUT THE SHAPING STEP AND SUBLIMABLE AT A TEMPERATURE BELOW THAT OF THE SINTERING TREATMENT. THIS RESIN IS THEN ELIMINATED BY SUBLIMATION AND THE SINTERING TREATMENT FOLLOWS. THE SOLID RESIN MAY BE POLYMETHYLMETHCRYLATE, POLYSTYRENE, A POLYMETHYLSTRENE TYPE RESIN OR A COPOLYMER OF GLYCOLPHTHALOMALEATE AND METHYLMETHACRYLATE. THE SHAPING OF THE BLANK MAY BE BY MEANS OF A LIQUID MONOMER CONTAINING A POLYMERISATION CATALYST AND A SUITABLE SOLVENT.
Inventors
- 👤 A Hivert
- 👤 P Galmiche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:36
CPC Classifications
B; B01; B01D; B01D67/00; B01D67/0039; B01D67/0053; B01D67/0055; B01D39/00; B01D39/14; B01D39/20; B01D39/2027; B01D39/2031; B01D39/2034; B01D67/0041; B01D67/00411; B01D71/00; B01D71/02; B01D71/022; B01D71/0223; B01D71/02232; B22; B22F; B22F1/00; B22F1/10; B22F3/00; B22F3/10; B22F3/1017; B22F3/1021; H; H01; H01M; H01M4/00; H01M4/86; H01M4/88; H01M4/8878; H01M4/8882; H01M4/8885; H01M8/00; H01M8/10; H01M8/12; H01M8/1213; B01D2325/00; B01D2325/04; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |