US3963503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making glass products, novel glass mix and novel glass product
Assignee: University of California, San Diego
•
Filing: 1975-03-14
•
Granted: 1976-06-15
•
Expires: 1995-03-14
Abstract
Abstract An improved method of making glass products is provided which comprises mixing particulate used-container glass with a selected treating agent to form a unique glass mix. The used-container glass has a preselected approximate concentration range of foreign inclusions and an average reflectance of about 5% to about 95%. The mix is heated to a temperature and pressure above the sintering and softening point of the glass but below its melting point and within a range sufficient to activate the treating agent to either foam or fill the glass. In the latter case, increased pressure is applied to form the glass into a hard pressed product, such as a tile, appearance. In the former case, foamed glass of distinctive appearance is produced. The used-container glass includes a plurality of particles of various colors, and the pressed product may have oxide pigments embedded in the surfaces thereof. The treating agent can be dolomite or other suitable treating agent.
Inventors
- 👤 John D. Mackenzie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:34
CPC Classifications
C; C03; C03C; C03C12/00; C03B; C03B19/00; C03B19/06; C03B19/08; C03C1/00; C03C1/002; C03C11/00; C03C11/007
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
120 words
An improved heat treatable glass mix comprising: used-container glass having the following approximate concentration of foreign inclusions mixed therewith: Inclusions % by wt. in glass
______________________________________
Fe 0.1 to 3
Sn 0.1 to 2
Al 0.1 to 2
Other metals 0.1 to 1
Cellulosics 0.1 to 1
Other organics 0.1 to 1
______________________________________ said used-container glass having an average reflectance of between about 5% and about 95%; and a carbonate foaming agent mixed therewith in a concentration of about 0.5 to about 10 percent by weight of the mix, said foaming agent being activatable upon heating said used-container glass to a temperature and pressure within a range sufficient to sinter and soften said glass but insufficient to melt said glass.
Claim 2
Dependent Claim
120 words
An improved heat treatable glass mix comprising: used-container glass having the following approximate concentration of foreign inclusions mixed therewith: Inclusions % by wt. in glass
______________________________________
Fe 0.1 to 3
Sn 0.1 to 2
Al 0.1 to 2
Other metals 0.1 to 1
Cellulosics 0.1 to 1
Other organics 0.1 to 1
______________________________________ said used-container glass having an average reflectance of between about 5% and about 95%; and a carbonate foaming agent mixed therewith in a concentration of about 0.5 to about 10 percent by weight of the mix, said foaming agent being activatable upon heating said used-container glass to a temperature and pressure within a range sufficient to sinter and soften said glass but insufficient to melt said glass.
Claim 3
Dependent Claim
12 words
The improved mix of claim 1 wherein said foaming agent comprises dolomite.
Claim 4
Dependent Claim
55 words
An improved solid glass product comprising a unitary multi-colored mass of sintered, particulate used-container glass having a closed cellular foam structure and having the following approximate concentration of foreign inclusions: Inclusions % by wt. in glass
______________________________________
Fe 0.1 to 3
Sn 0.1 to 2
Al 0.1 to 2
Other metals 0.1 to 1.
______________________________________
Claim 5
Dependent Claim
55 words
An improved solid glass product comprising a unitary multi-colored mass of sintered, particulate used-container glass having a closed cellular foam structure and having the following approximate concentration of foreign inclusions: Inclusions % by wt. in glass
______________________________________
Fe 0.1 to 3
Sn 0.1 to 2
Al 0.1 to 2
Other metals 0.1 to 1.
______________________________________
Claim 6
Dependent Claim
119 words
An improved heat treatable glass mix comprising: used-container glass having the following approximate concentration of foreign inclusions mixed therewith: Inclusions % by wt. in glass
______________________________________
Fe 0.1 to 3
Sn 0.1 to 2
Al 0.1 to 2
Other metals 0.1 to 1
Cellulosics 0.1 to 1
Other organics 0.1 to 1
______________________________________ said used-container glass having an average reflectance of between about 5% and about 95%; and a filling agent mixed therewith to a concentration of about 10-80 percent by weight of said mix, said filling agent being coalesceable with said glass upon heating said used-container glass to a temperature and pressure within a range sufficient to sinter and soften said glass but insufficient to melt said glass.
Claim 7
Dependent Claim
119 words
An improved heat treatable glass mix comprising: used-container glass having the following approximate concentration of foreign inclusions mixed therewith: Inclusions % by wt. in glass
______________________________________
Fe 0.1 to 3
Sn 0.1 to 2
Al 0.1 to 2
Other metals 0.1 to 1
Cellulosics 0.1 to 1
Other organics 0.1 to 1
______________________________________ said used-container glass having an average reflectance of between about 5% and about 95%; and a filling agent mixed therewith to a concentration of about 10-80 percent by weight of said mix, said filling agent being coalesceable with said glass upon heating said used-container glass to a temperature and pressure within a range sufficient to sinter and soften said glass but insufficient to melt said glass.
Claim 8
Dependent Claim
34 words
The improved mix of claim 4 wherein said filler is selected from the group consisting of clay, asbestos, fiberglass and mixtures thereof, in a concentration of about 40-60 percent by weight of said mix.
Claim 9
Dependent Claim
63 words
An improved solid pressed glass product comprising a unitary mass of sintered, particulate used-container glass having the following approximate concentration of foreign inclusions: Inclusions % by wt. in glass
______________________________________
Fe 0.1 to 3
Sn 0.1 to 2
Al 0.1 to 2
Other metals 0.1 to 1
Filling agent 10-80
______________________________________ said glass having a reflectance of between about 5% and about 95%.
Claim 10
Dependent Claim
63 words
An improved solid pressed glass product comprising a unitary mass of sintered, particulate used-container glass having the following approximate concentration of foreign inclusions: Inclusions % by wt. in glass
______________________________________
Fe 0.1 to 3
Sn 0.1 to 2
Al 0.1 to 2
Other metals 0.1 to 1
Filling agent 10-80
______________________________________ said glass having a reflectance of between about 5% and about 95%.
Claim 11
Dependent Claim
19 words
The improved product of claim 6 wherein said filling agent is in a concentration of about 40-60 weight percent.
Claim 12
Dependent Claim
19 words
The improved product of claim 6 wherein the surfaces of said pressed product have colored oxide pigments embedded therein.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |