Patents by Inventor Matheus H. G. Jennekens

Matheus H. G. Jennekens has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for separating off calcium nitrate tetrahydrate by crystallization
    Patent number: 4569677
    Abstract: Separating Ca(NO.sub.3).sub.2.4H.sub.2 O from a nitrophosphate digestion liquor by crystallization, wherein Ca(NO.sub.3).sub.2.4H.sub.2 O seeding material with a particle size smaller than 100 .mu.m is added to this liquor at a temperature of 0.degree.,1.degree.-2.degree. C. lower than the saturation temperature, the resulting liquor is batchwise cooled, and the Ca(NO.sub.3).sub.2.4H.sub.2 O crystallized out is separated from the cooled liquor.The Ca(NO.sub.3 ).sub.2.4H.sub.2 O is substantially crystallized out without excessive cooling as very coarse and uniform particles which can be easily separated out.
    Type: Grant
    Filed: February 23, 1984
    Date of Patent: February 11, 1986
    Assignee: Unie van Kunstmestfabrieken B.V.
    Inventors: Gijsbertus H. M. Calis, Matheus H. G. Jennekens