Patents by Inventor Johannes M. H. Lambie

Johannes M. H. Lambie 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).

  • Granular fertilizer composition having controlled release and process for the preparation thereof
    Patent number: 4657576
    Abstract: Fertilizer composition in granular form having a regulated release of water-soluble fertilizer agents such as nitrogen, phosphorous, and potassium compounds. Each granule has a core comprising fertilizer substances having a known pH value, and a coating encapsulating the core. The coating is based on dicyclopentadiene and either linseed oil or a soy bean oil alkyd. The coating serves as a pH-regulator, so that for a core having a pH value below 6.0, the pH of the coating is regulated to be in the range of 6.0 to 9.0, while for a core having a pH value higher than 6.0 the coating includes a mixture of trace element compounds and has a pH value lying between 4.5 and 9.0.
    Type: Grant
    Filed: November 13, 1985
    Date of Patent: April 14, 1987
    Assignee: Sierra Chemical Company
    Inventor: Johannes M. H. Lambie