US2923649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid suspension of high density particles
Assignee: Superweld Corp
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Filing: 1956-02-10
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Granted: 1960-02-02
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Expires: 1976-02-10
Abstract
No abstract record available.
Inventors
- 👤 Hoyt H Todd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:20
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/28; B03B5/30; B03B5/44; B03B5/442; B01; B01J; B01J13/00; B01J13/0086
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A METHOD OF COMBINING METAL PARTICLES OF GREATER THAN COLLOIDAL SIZE WITH A LIQUID TO FORM A SUSPENSION HAVING RELATIVELY HIGH STABILITY UNDER STATIC CONDITIONS, INCLUDING THE STEPS OF: COATING THE METAL PARTICLES WITH A COLLECTOR TO MAKE THE PARTICLES MORE ADHERENT TO A GAS THAN TO A LIQUID, DISPERSING THE COATED PARTICLES IN A LIQUID CONTAINING A REDUCING AGENT, AND AGITATING THE MIXTURE TO CAUSE SMALL AIR BUBBLES TO BE ENTRAINED THEREIN FOR ADHERENCE TO THE PARTICLES TO FORM PARTICLE-BUBBLE UNITS WITH THE REDUCING AGENT REMOVING OXYGEN FROM THE ENTRAINED AIR TO RESULT IN NITROGEN BUBBLES.
Claim 2
Independent Claim
97 words
A METHOD OF COMBINING METAL PARTICLES OF GREATER THAN COLLOIDAL SIZE WITH A LIQUID TO FORM A SUSPENSION HAVING RELATIVELY HIGH STABILITY UNDER STATIC CONDITIONS, INCLUDING THE STEPS OF: COATING THE METAL PARTICLES WITH A COLLECTOR TO MAKE THE PARTICLES MORE ADHERENT TO A GAS THAN TO A LIQUID, DISPERSING THE COATED PARTICLES IN A LIQUID CONTAINING A REDUCING AGENT, AND AGITATING THE MIXTURE TO CAUSE SMALL AIR BUBBLES TO BE ENTRAINED THEREIN FOR ADHERENCE TO THE PARTICLES TO FORM PARTICLE-BUBBLE UNITS WITH THE REDUCING AGENT REMOVING OXYGEN FROM THE ENTRAINED AIR TO RESULT IN NITROGEN BUBBLES.
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) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |