Patent US3849356A successfully refreshed from Google Patents.
US3849356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixture for making a mold
Assignee: Kawasaki Heavy Industries Ltd
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Filing: 1973-09-11
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Granted: 1974-11-19
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Expires: 1993-09-11
Abstract
Abstract 1. IN A MIXTURE FOR AMKING A SELF-HARDENING FLUID MOLD COMPRISING A REFRACTORY MATERIAL IN POWDER FORM, WATER GLASS. A HARDENING AGENT SELECTED FROM THE GROUP CONSISTING OF PORTLAND CEMENT, SLAKED LIME, ALUMINA CEMENT OR MIXTURES THEREOF, SURFACE ACTIVE AGENT, ABOUT 0.20 TO 1.0% BY WEIGHT OF POWDERED ALUMINUM, AND WATER, THE IMPROVEMENT WHICH COMPRISES THAT THE MIXTURE ADDITIONALLY CONTAINS ABOUT 0.1 TO 1.0 PARTS BY WEIGHT OF A NOVOLAK PHENOL RESIN HAVINGG A GELATION TIME OF FROO 50 TO 80 SECONDS AT 140* C., PER 100 PARTS BY WEIGHT OF THE REFRACRORY MATERIAL.
Inventors
- 👤 A Matsui
- 👤 Y Hasegawa
- 👤 H Fujimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:24
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/18; B22C1/167; C; C04; C04B; C04B28/00; C04B28/24; C04B28/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN A MIXTURE FOR AMKING A SELF-HARDENING FLUID MOLD COMPRISING A REFRACTORY MATERIAL IN POWDER FORM, WATER GLASS. A HARDENING AGENT SELECTED FROM THE GROUP CONSISTING OF PORTLAND CEMENT, SLAKED LIME, ALUMINA CEMENT OR MIXTURES THEREOF, SURFACE ACTIVE AGENT, ABOUT 0.20 TO 1.0% BY WEIGHT OF POWDERED ALUMINUM, AND WATER, THE IMPROVEMENT WHICH COMPRISES THAT THE MIXTURE ADDITIONALLY CONTAINS ABOUT 0.1 TO 1.0 PARTS BY WEIGHT OF A NOVOLAK PHENOL RESIN HAVINGG A GELATION TIME OF FROO 50 TO 80 SECONDS AT 140* C., PER 100 PARTS BY WEIGHT OF THE REFRACRORY MATERIAL.
Claim 2
Dependent Claim
93 words
IN A MIXTURE FOR AMKING A SELF-HARDENING FLUID MOLD COMPRISING A REFRACTORY MATERIAL IN POWDER FORM, WATER GLASS. A HARDENING AGENT SELECTED FROM THE GROUP CONSISTING OF PORTLAND CEMENT, SLAKED LIME, ALUMINA CEMENT OR MIXTURES THEREOF, SURFACE ACTIVE AGENT, ABOUT 0.20 TO 1.0% BY WEIGHT OF POWDERED ALUMINUM, AND WATER, THE IMPROVEMENT WHICH COMPRISES THAT THE MIXTURE ADDITIONALLY CONTAINS ABOUT 0.1 TO 1.0 PARTS BY WEIGHT OF A NOVOLAK PHENOL RESIN HAVINGG A GELATION TIME OF FROO 50 TO 80 SECONDS AT 140* C., PER 100 PARTS BY WEIGHT OF THE REFRACRORY MATERIAL.
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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |