International Patents Development Co. v. Penick & Ford, Ltd.

15 F. Supp. 1038, 1936 U.S. Dist. LEXIS 2158
CourtDistrict Court, D. Delaware
DecidedJuly 30, 1936
Docket654
StatusPublished
Cited by1 cases

This text of 15 F. Supp. 1038 (International Patents Development Co. v. Penick & Ford, Ltd.) is published on Counsel Stack Legal Research, covering District Court, D. Delaware primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
International Patents Development Co. v. Penick & Ford, Ltd., 15 F. Supp. 1038, 1936 U.S. Dist. LEXIS 2158 (D. Del. 1936).

Opinion

*1039 NTELDS, District Judge.

This is a patent suit charging defendant with infringement of three patents for the production of grape sugar. Grape sugar, corn sugar, dextrose, and dextrose hydrate are terms used interchangeably to describe the product of the patents. The defenses are invalidity, noninfringement, license, and estoppel.

The first, patent, No. 1,471,347, granted October 23, 1923, to William B. New-kirk, assignor to Corn Products Refining Company, for a “Method of Making Grape Sugar,” is a process patent. The second patent, No. 1,508,569, dated September 16, 1924, to Newkirk, assignor to Corn Products Refining Company for “Grape Sugar,” is a product patent. The application for this patent is a division of the application [or lire first patent. The third patent, No. 1,521,830, granted January 6, 1925, to Newkirk, assignor to International Patents Development Company, for the “Manufacture of Dextrose,” covers an improvement on the process of the first patent.

The plaintiff International Patents Development Company is owner of the three patents. The plaintiff Corn Products Refining Company lias a license from International Patents Development Company to manufacture and sell dextrose under the patents. This is an exclusive license except for a nonexclusive license to American Maize Products Company. Corn Products Refining Company has a factory at Edgcwater, N. J., where the patents were developed in the first instance. It also has a larger factory at Argo, 111., where the process was further developed and where it is now practiced on a large scale. The defendant Penick & Ford, Limited, Incorporated, has a factory at Cedar Rapids, Iowa, and is engaged- in the production of various corn products.

Dextrose is a sugar found in nature in the juices of certain fruits like grapes. The real source of the raw material is cornstarch. Dextrose is manufactured by converting cornstarch. The method of conversion is to put the starch mixed with water and a small amount of hydrochloric acid into a large vessel. Heat is then applied and the starch is changed into sugar. In reality, the starch molecule is split and takes up water. It is a process of hydrolysis. The process is to bring about crystallization of the dextrose and then separation of the crystals from the mother liquor or hydrol. Dextrose differs from cane sugar. Cane sugar or sucrose is an anhydrous sugar. The crystal contains no water of crystallization. The natural form of sucrose is a rough cubicle crystal of fairly good size not grown together. On the other hand, dextrose crystallizes into two forms that are quite different. In one form the crystal is anhydrous. In the other form the crystal takes up water from the solution and is known as dextrose hydrate. The water goes into the molecular structure of the crystal sugar and forms part thereof. The anhydride and hydrate are in different crystal systems.

The product of these patents is hydrate crystals known as cerelose. The hydrate crystals are white, of high purity, and granular. Their tendency is to grow together in clusters and intertwine into a . rather solid mass. In the Newkirk process the form of the crystal is of the utmost importance. It aims at relatively large crystals. The process relies exclusively on crystallizing the dextrose so that impurities may be purged from the .solid dextrose in the ordinary centrifuge. Cerelose has a purity very close to 100 per cent. It does not compete with corn sugars containing from 5 to 10 per cent, of impurities for which there has been a market for a hundred years. Cerelose competes with sucrose. In some respects it is not as good as sucrose and in others it is better. Being less sweet, it is used to advantage in ice cream, candy, and preserves where undue sweetness is undesirable.

The hydrate dextrose or cerelose crystal is rather flat instead of cubicle. It has higher osmatic pressure, so that it has an advantage over sucrose in preserving. It will penetrate the cells of bacteria and destroy them.

History of the Art.

In 1811 there was a shortage of cane sugar in Europe as the result of Napoleon’s continental system of shutting off England from trading on the continent. A Russian chemist named Kirchoff discovered that you could treat cornstarch with an acid and heat and produce a sugarlike substance called dextrose. He perfected two types. One was slab sugar made by pouring converted liquor into pans and letting it solidify. This sugar contained all of the impurities of the original liquor. It is still made, and is called 70 or 80 slab sugar. Kirchoff also suggested the purification of slab sugar by subjecting it *1040 to pressure. This process is used at the present day, and is what we call Argo sugar. When the big Argo factory of plaintiff was built between 1907 and 1911, it was decided to put this pressed sugar process in as well as the 70 and 80 slab process.

Between 1860 and 1870 what was known as the Anthon process was experimented with but was never used commercially. It was a quiescent crystallization process like the slab sugar and pressed sugar, although the Anthon process contemplated a stirring of the seed. The massecuite was allowed to crystallize quiescently. Where you have a quiescent crystallization of dextrose, the crystals are fine needles which grow in clusters, so it is impossible to satisfactorily purge out the mother liquor. Anthon was never a successful process.

The next step was taken by Becke. He was a crystallographer and not a manufacturer. The hydrate crystals which he actually saw were clustered. However, in his first work he represented in Fig. 7 of one of the articles what he supposed would be a single crystal if it could be produced. The representation of a single hydrate crystal in the first Becke article was an idealization or a hypothetical construction. Afterwards he discovered that the dextrose crystal was hemimorphic and pictured the aspect he saw.

The first real advance following Kirchoff was made by Behr. He was a brilliant chemist and sugar technologist in the employ of one of the predecessors of Corn Products Refining Company. He discovered that he could produce a fairly purge-able massecuite provided he controlled conditions so as to produce anhydrous crystals. The anhydrous crystal is naturally a better crystal to purge than the hydrate crystal. Behr was insistent that the only way to obtain a dextrose of any high purity was to follow the principle of anhydrous crystallization. It is quite a complicated process, but he finally got cakes of anhydrous sugar, and these were put into a centrifugal machine and the mother liquor was taken out so that he got a purity of about 96. In order to get 98, it was necessary to take that sugar, melt and recrystallize it. When Argo was built in 1907 to 1910 or 1911, it was a question as to whether they would put into that factory the Behr process or the pressed sugar process. The expense of the Behr process was so considerable that it was decided to put in the pressed sugar process.

There is no proof that the Soxhlet process was ever commercialized. It has been relied upon as an anticipation. It involves a quiescent crystallization. It does not involve the use of seed and contains no specification of purity. Defendant has developed a surprising theory respecting'it.

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15 F. Supp. 1038, 1936 U.S. Dist. LEXIS 2158, Counsel Stack Legal Research, https://law.counselstack.com/opinion/international-patents-development-co-v-penick-ford-ltd-ded-1936.