Donald E. Freepons

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Kennewick, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Fertilizer processes and compositions using s-triazines
- Patent number 5,139,555
- Issue date Aug 18, 1992
- Melamine Chemicals, Inc.
- Donald E. Freepons
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Grant
Fertilizer compositions, processes of making them, and pocesses of...
- Patent number 4,832,728
- Issue date May 23, 1989
- Melamine Chemicals, Inc.
- G. Graham Allan
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Grant
Fertilizer compositions, processes of making them and processes of...
- Patent number 4,560,400
- Issue date Dec 24, 1985
- Melamine Chemicals, Inc.
- G. Graham Allan
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Grant
Fertilizer processes and compositions using s-triazines
- Patent number 4,559,075
- Issue date Dec 17, 1985
- Melamine Chemicals, Inc.
- Donald E. Freepons
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Grant
Fertilizer processes and compositions using s-triazines
- Patent number 4,554,003
- Issue date Nov 19, 1985
- Melamine Chemicals, Inc.
- Donald E. Freepons
- C05 - FERTILISERS MANUFACTURE THEREOF