Patent US2472605A successfully refreshed from Google Patents.
US3042535A
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Aggregate treatment
Assignee: IOWA STATE COLLEGE RES FOUND
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Filing: 1959-07-22
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Granted: 1962-07-03
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Expires: 1979-07-22
Abstract
No abstract record available.
Inventors
- 👤 Carl L Hiltrop
- 👤 Lemish John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:03
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/10; C04B20/1051; Y; Y10; Y10S; Y10S106/00; Y10S106/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
IN A METHOD OF INPROVING THE FAILURE RESISTANCE OF AN AGGREGATE-CONTAINING CONSTRUCTION MATERIAL, THE STEPS OF CONTACTING ARGILLACEOUS ROCKS WITH A GASEOUS METHYL CHLOROSILANE, AND BLENDING SAID ROCKS WITH A CEMENTITIOUS MATERIAL TO FORM SAID CONSTRUCTION MATERIAL, SAID CONTACTING STEP BEING CHARACTERIZED BY SUFFICIENT GAS PENETRATION OF SAID ROCKS TO MAINTAIN THE ARGILLACEOUS MATERIAL THEREIN IN ITS ORIGINAL THREE-DIMENSIONAL CONFIGURATION AND THEREBY PREVENT THE DEVELOPMENT OF ROCK REACTION SHELLS.
Claim 2
Dependent Claim
69 words
IN A METHOD OF INPROVING THE FAILURE RESISTANCE OF AN AGGREGATE-CONTAINING CONSTRUCTION MATERIAL, THE STEPS OF CONTACTING ARGILLACEOUS ROCKS WITH A GASEOUS METHYL CHLOROSILANE, AND BLENDING SAID ROCKS WITH A CEMENTITIOUS MATERIAL TO FORM SAID CONSTRUCTION MATERIAL, SAID CONTACTING STEP BEING CHARACTERIZED BY SUFFICIENT GAS PENETRATION OF SAID ROCKS TO MAINTAIN THE ARGILLACEOUS MATERIAL THEREIN IN ITS ORIGINAL THREE-DIMENSIONAL CONFIGURATION AND THEREBY PREVENT THE DEVELOPMENT OF ROCK REACTION SHELLS.
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) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |