US3793134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low density, high strength ceramic article
Assignee: Primerica Inc
•
Filing: 1971-11-01
•
Granted: 1974-02-19
•
Expires: 1991-11-01
Abstract
Abstract A method for producing a low-density ceramic article containing a mixture of clay and low-density aggregate. The materials are intermixed with water and charged into a mold where the mixture is compacted into the shape of the article. Thereafter, it is dried, glazed and fired to produce the final article.
Inventors
- 👤 P Hardy
- 👤 O Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:48
CPC Classifications
C; C04; C04B; C04B38/00; C04B38/08; C03; C03C; C03C4/00; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24413; Y10T428/24421; Y10T428/2443; Y10T428/24802; Y10T428/24893; Y10T428/24926; Y10T428/25; Y10T428/259
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
The ceramic article of claim 1, in which the ceramic material is ball clay present in a proportion of approximately 55 parts to 45 parts of the vermiculite by weight, and in which the engobe layer is a fine clay.
Claim 2
Dependent Claim
12 words
The article of claim 2 wherein the ceramic article is a dish.
References Cited (Backward Citations)
US2079665A
Cited
US2741008A
Cited
US2839209A
Cited
US3215542A
Cited
US3274310A
Cited
US3425577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |