Patent US3096156A successfully refreshed from Google Patents.
Patent US2541658A successfully refreshed from Google Patents.
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 21:06
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."
References Cited (Backward Citations)
US930376A
Cited
US944436A
Cited
US1061255A
Cited
US1001572A
Cited
US1482792A
Cited
US1400495A
Cited
US1549409A
Cited
US1482793A
Cited
US1910444A
Cited
US1987861A
Cited
US2123419A
Cited
US2281167A
Cited
US2303284A
Cited
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 |