US2541658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated abrasive grains and the method of coating the abrasive grains
Assignee: Monsanto Chemicals Ltd
•
Filing: 1947-11-04
•
Granted: 1951-02-13
•
Expires: 1967-11-04
Abstract
No abstract record available.
Inventors
- 👤 Jacob S Masin
- 👤 Tull C Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:56
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1436
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
45 words
ABRASIVE GRAIN COATED WITH A SUBSTANTIALLY WATER INSOLUBLE, UNFUSED, UNVITRIFIED FILM WHICH BONDS FINELY DIVIDED INERT MATERIALS TO THE SURFACE OF THE GRAIN, SAID FILM CONSISTING ESSENTIALLY OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM METAPHOSPHATE, FERRIC METAPHOSPHATE, MAGNESIUM METAPHOSPHATE AND "PLASTIC PHOSPHATE"
Claim 2
Dependent Claim
45 words
ABRASIVE GRAIN COATED WITH A SUBSTANTIALLY WATER INSOLUBLE, UNFUSED, UNVITRIFIED FILM WHICH BONDS FINELY DIVIDED INERT MATERIALS TO THE SURFACE OF THE GRAIN, SAID FILM CONSISTING ESSENTIALLY OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM METAPHOSPHATE, FERRIC METAPHOSPHATE, MAGNESIUM METAPHOSPHATE AND "PLASTIC PHOSPHATE"
Claim 3
Independent Claim
91 words
THE METHOD OF IMPROVING THE BONDING PROPERTIES OF ABRASIVE GRAINS, WHICH COMPRISES COATING THEM WITH A MATERIAL CONSISTING ESSENTIALLY OF A SOLUTION OF A MONO-METALLIC ORTHOPHOSPHORATE CARRYING FINELY DIVIDED INERT MATERIAL AND THEN HEATING THE COATED GRAIN TO A TEMPERATURE SUFFICIENT TO MOLECULARLY DEHYDRATE SAID ORTHOPHOSPHATE TO METAPHOSPHATE BUT BELOW THE TEMPERATURE AT WHICH SUBSTANTIAL FUSION OF THE METAPHOSPHATE TAKES PLACE, SAID MONO-METALLIC ORTHOPHOSPHATE BEING SELECTED FROM THE GROUP CONSISTING OF MONO-ALUMINUM ORTHOPHONSPHATE, MONO-IRON ORTHOPHOSPHATE, MONO-MAGNESIUM ORTHOPOSPHATE AND A MIXTURE OF MONO-POTASSIUM AND MONO-SODIUM ORTHOPHOSPHATES IN AMOUNTS EQUIVALENT TO "PLASTIC PHOSPHATE."
Claim 4
Independent Claim
91 words
THE METHOD OF IMPROVING THE BONDING PROPERTIES OF ABRASIVE GRAINS, WHICH COMPRISES COATING THEM WITH A MATERIAL CONSISTING ESSENTIALLY OF A SOLUTION OF A MONO-METALLIC ORTHOPHOSPHORATE CARRYING FINELY DIVIDED INERT MATERIAL AND THEN HEATING THE COATED GRAIN TO A TEMPERATURE SUFFICIENT TO MOLECULARLY DEHYDRATE SAID ORTHOPHOSPHATE TO METAPHOSPHATE BUT BELOW THE TEMPERATURE AT WHICH SUBSTANTIAL FUSION OF THE METAPHOSPHATE TAKES PLACE, SAID MONO-METALLIC ORTHOPHOSPHATE BEING SELECTED FROM THE GROUP CONSISTING OF MONO-ALUMINUM ORTHOPHONSPHATE, MONO-IRON ORTHOPHOSPHATE, MONO-MAGNESIUM ORTHOPOSPHATE AND A MIXTURE OF MONO-POTASSIUM AND MONO-SODIUM ORTHOPHOSPHATES IN AMOUNTS EQUIVALENT TO "PLASTIC PHOSPHATE."
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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) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |