US3180722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making briquettes from cast iron shavings
Assignee: Individual
•
Filing: 1963-03-28
•
Granted: 1965-04-27
•
Expires: 1983-03-28
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Swartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 21:36
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/24; C22B1/248; C22B1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A METHOD OF PRODUCING A NON-FRANGIBLE ARTICLE OF CAST IRON PARTICLES COMPRISING THE STEPS OF: MIXING SAID CAST IRON PARTICLES WITH A CEMENTITIOUS MATERIAL IN A DRY POWDERED STATE; COMPRESSING SAID MIXTURE INTO A COHESIVE BODY; IMMERSING SAID COHESIVE BODY INTO A LIQUID WHICH REACTS WITH THE CEMENTITIOUS MATERIAL TO FORM A BINDER THEREFROM; HOLDING SAID COHESIVE BODY SUBMERGED IN THE LIQUID FOR PENETRATION THEREOF TO A LIMITED DEPTH LEAVING THE BODY UNAFFECTED THROUGHOUT A SUBSTANTIAL INTERNAL PORTION THEREOF; AND DRYING THE COHESIVE BODY UPON REMOVAL FROM THE LIQUID TO FORM AN OUTER PROTECTIVE LAYER OF SAID LIMITED DEPTH ABOUT SAID INTERNAL PORTION OF THE COHESIVE BODY.
Claim 2
Independent Claim
107 words
A METHOD OF PRODUCING A NON-FRANGIBLE ARTICLE OF CAST IRON PARTICLES COMPRISING THE STEPS OF: MIXING SAID CAST IRON PARTICLES WITH A CEMENTITIOUS MATERIAL IN A DRY POWDERED STATE; COMPRESSING SAID MIXTURE INTO A COHESIVE BODY; IMMERSING SAID COHESIVE BODY INTO A LIQUID WHICH REACTS WITH THE CEMENTITIOUS MATERIAL TO FORM A BINDER THEREFROM; HOLDING SAID COHESIVE BODY SUBMERGED IN THE LIQUID FOR PENETRATION THEREOF TO A LIMITED DEPTH LEAVING THE BODY UNAFFECTED THROUGHOUT A SUBSTANTIAL INTERNAL PORTION THEREOF; AND DRYING THE COHESIVE BODY UPON REMOVAL FROM THE LIQUID TO FORM AN OUTER PROTECTIVE LAYER OF SAID LIMITED DEPTH ABOUT SAID INTERNAL PORTION OF THE COHESIVE BODY.
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) | 1968-04-26 | 1968-10-26 | 1969-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-26 | 1972-10-26 | 1973-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-26 | 1976-10-26 | 1977-04-27 | $7700.00 | Window Closed / Lapsed |