David D Walgenbach

US Patent:

39687716, Jul 13, 1976

Filed:

May 23, 1974

Appl. No.:

5/472784

Inventors:

David D. Walgenbach - Brookings SD
Kenneth E. Stocker - Indianola IA

Assignee:

Chevron Research Company - San Francisco CA

International Classification:

B05C 502

US Classification:

118303

Abstract:

A process for applying a pesticidal composition to granular vegetative products such as grains and seeds, which comprises: 1. loading and compacting a granular material into a first chamber by conveying it upwardly against the force of gravity; 2. conveying and tumbling the compacted granular material from the first chamber into a second chamber of greater capacity than the first chamber to permit mixing and tumbling of the granular material; 3. spraying the tumbling granular material with a pesticidal composition in the second chamber; and 4. discharging the sprayed granular material from the second chamber. Apparatus suitable for carrying out the process of the invention are also described.

US Patent:

39314120, Jan 6, 1976

Filed:

May 9, 1974

Appl. No.:

5/468629

Inventors:

Daniel L. Kensler - West Des Moines IA
Gustave K. Kohn - Berkeley CA
David D. Walgenbach - Brookings SD

Assignee:

Chevron Research Company - San Francisco CA

International Classification:

A01N 924

US Classification:

424313

Abstract:

Fungal and bacterial growth are inhibited by the use of di-carboxylic acid esters and compositions thereof. In a preferred embodiment, crops and animal feedstuffs are preserved during storage against fungal attack by applying a fungicidal amount of a mono-, di- or trioxymethylene, or lower alkylidene bis-alkanoate, or a mixture thereof. In another preferred embodiment, apple scab is controlled by applying to apple trees a fungicidal amount of a mono-, di- or trioxymethylene bis-alkanoate.

US Patent:

40125262, Mar 15, 1977

Filed:

Jul 21, 1975

Appl. No.:

5/597855

Inventors:

Daniel L. Kensler - Adel IA
Gustave K. Kohn - Berkeley CA
David D. Walgenbach - Brookings SD

Assignee:

Chevron Research Company - San Francisco CA

International Classification:

A61K 31225

US Classification:

424313

Abstract:

Fungal growth in animal feedstuffs is inhibited by the use of di-carboxylic acid esters and compositions thereof. In addition to inhibiting the growth of fungi, the di-carboxylic acid esters increase the nutritional value of the animal feedstuff treated, and promote greater weight gain and feed efficiency response in animals fed the treated feedstuff compositions.

US Patent:

41235525, Oct 31, 1978

Filed:

Oct 17, 1975

Appl. No.:

5/623287

Inventors:

Daniel L. Kensler - West Des Moines IA
Gustave K. Kohn - Berkeley CA
David D. Walgenbach - Brookings SD

Assignee:

Chevron Research Company - San Francisco CA

International Classification:

A01N 924

US Classification:

424311

Abstract:

Fungus and mold growth in crops and organic matter are inhibited by the use of bis-carboxylic acid esters and compositions thereof. In a preferred embodiment, crops and animal feedstuffs are preserved during storage by applying a microbiocidal amount of a mono-, di or trioxymethylene, or lower alkylidene bis-alkanoate, or a mixture thereof.