US3607223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of low-density materials
Assignee: Individual
•
Filing: 1969-06-17
•
Granted: 1971-09-21
•
Expires: 1989-06-17
Abstract
Abstract Low-density materials are formed by forming a molten mixture of two or more materials, one of which has a lower boiling point than the other and causing the volatilization of the lower boiling point material so as to form a foam of the higher boiling point material.
Inventors
- 👤 John Massey Trihey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:45
CPC Classifications
C; C04; C04B; C04B38/00; C04B38/0087; C22; C22C; C22C1/00; C22C1/08; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12479
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
32 words
A method as claimed in claim 1, wherein said molten mixture is formed at atmospheric pressure and the pressure is reduced to an extent sufficient to cause volatilization of said volatilizable material.
Claim 2
Dependent Claim
39 words
The method claimed in claim 1, wherein the mixture is formed in a pressurized environment so that the volatilizable material is in the form of a superheated liquid and the pressure is then released to volatilize said volatilizable material.
Claim 3
Dependent Claim
29 words
The method claimed in cLaim 1, wherein the temperature of the mixture is raised to a point between the volatilization temperature of the volatilizable material and the settable material.
References Cited (Backward Citations)
US2751289A
Cited
US2983597A
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US3214265A
Cited
US3300296A
Cited
US3360361A
Cited
US3379517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |