US3804644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic green mix
Assignee: Monier Research and Development Pty Ltd
•
Filing: 1970-12-17
•
Granted: 1974-04-16
•
Expires: 1990-12-17
Abstract
Abstract Ceramic green mix suitable for pressure molding and extrusion techniques consists of basic igneous rocks free of free quartz (basalt, dolerite, gabbro), clay 10-20% by weight of rocks, and water 4 to 9 parts per 10-20 parts of clay, respectively.
Inventors
- 👤 H Wilkinson
- 👤 L Pilli
- 👤 T Wilkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:14
CPC Classifications
C; C04; C04B; C04B33/00; C04B35/00; C04B35/01; C04B35/16; C04B35/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
A mixture according to claim 1 in which about 40% to 60% by weight of said rock is present as fine particles having a varying particle size of one-eighth inch to dust and the remainder of the rock is in the form of coarse particles having a varying particle size of three-fourth inch to one-eighth inch.
References Cited (Backward Citations)
US1094727A
Cited
GB619061A
Cited
US2543548A
Cited
US2726964A
Cited
US3199992A
Cited
GB1086581A
Cited
US3700472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-15 | 1977-10-15 | 1978-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-15 | 1981-10-15 | 1982-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-15 | 1985-10-15 | 1986-04-16 | $7700.00 | Window Closed / Lapsed |