Patent US3174845A successfully refreshed from Google Patents.
US3174845A
Expired / Lapsed
US
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Process for producing soil-treating material
Assignee: Individual
•
Filing: 1961-01-16
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Granted: 1965-03-23
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Expires: 1981-01-16
Abstract
No abstract record available.
Inventors
- 👤 Macarthur Roger Afton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:00
CPC Classifications
C; C05; C05D; C05D9/00; Y; Y10; Y10S; Y10S71/00; Y10S71/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PROCESS FOR THE PREPARATION OF SOIL-TREATING MATERIAL COMPRISING THE STEPS OF PROVIDING A VACUUM CHAMBER, INTORDUCING INTO SAID CHAMBER EXPANDED PERLITE AND A SOIL-TREATING INGREDIENT IN LIQUID FORM, SAID PERLITE SUSTANTIALLY COMPRISING PARTICLES HAVING LARGEST DIMENSIONS BETWEN -10 MESH AND 1/4 INCH IN DIAMETER, APPLYING A VACUUM WITHIN SAID CHAMBER OF AT LEAST ABOUT 100 MILLIMETERS OF MERCURY WHEREBY SAID PERLITE WILL ABOSRB SAID INGREDIENT INTO THE BODY THEREOF TO FILL ABOUT 90 PERCENT OF THE VOIDS IN SAID PERLITE, AND REMOVING THE PERLITE WITH THE ABSORBED INGREDIENT FROM SAID CHAMBER.
Claim 2
Dependent Claim
92 words
A PROCESS FOR THE PREPARATION OF SOIL-TREATING MATERIAL COMPRISING THE STEPS OF PROVIDING A VACUUM CHAMBER, INTORDUCING INTO SAID CHAMBER EXPANDED PERLITE AND A SOIL-TREATING INGREDIENT IN LIQUID FORM, SAID PERLITE SUSTANTIALLY COMPRISING PARTICLES HAVING LARGEST DIMENSIONS BETWEN -10 MESH AND 1/4 INCH IN DIAMETER, APPLYING A VACUUM WITHIN SAID CHAMBER OF AT LEAST ABOUT 100 MILLIMETERS OF MERCURY WHEREBY SAID PERLITE WILL ABOSRB SAID INGREDIENT INTO THE BODY THEREOF TO FILL ABOUT 90 PERCENT OF THE VOIDS IN SAID PERLITE, AND REMOVING THE PERLITE WITH THE ABSORBED INGREDIENT FROM SAID CHAMBER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |