Appeal No. 1996-0212
Application No. 08/261,759
This is an appeal pursuant to 35 U.S.C. § 134 from the
final rejection of claims 1-29 and 31-41.
Representative claims 31, 6, 1, and 21 are reproduced
below:
31. A liquid aqueous foliar fertilizer for plant
nutrition, produced by the following process:
mixing at least one water miscible polyhydroxy alcohol
with at least one phosphoric acid;
heating the mixture from the previous step to
temperatures in excess of 150°C to remove water in the
presence of reaction promoters therefrom and cause
esterification;
esterifying phosphorus contained in said mixture to
produce an esterified reaction product containing phosphate
esters; and
adjusting the reaction product to a pH level suitable for
application to foliage of plants being fertilized.
6. A liquid aqueous foliar fertilizer for plant
nutrition, comprising:
at least one liquid phosphate ester; and
at least one hygroscopic agent in sufficient quantity to
extract moisture from the atmosphere to help maintain applied
foliar fertilizer in liquid form on the foliage for from 1 to
7 days;
said at least one phosphate ester being selected from the
group consisting essentially of an alcohol phosphate ester, a
2
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