Company Filing History:
Years Active: 1991-1992
Title: The Innovative Contributions of Johannes T De Hey
Introduction
Johannes T De Hey is a notable inventor based in Hilversum, Netherlands. He has made significant contributions to the field of flavor and fragrance materials, holding a total of 2 patents. His work is characterized by innovative processes that enhance the preparation of various chemical compounds.
Latest Patents
One of his latest patents is focused on the preparation of hydroxy furanone. This invention provides a process for creating natural 5-methyl- and 2,5-dimethyl-4-hydroxy-2,3-dihydrofuran-3-one. The process involves heating and reacting a pentose or 6-deoxyhexose in the presence of an amino acid, followed by the direct separation of the hydroxyfuranone from the reaction mixture through distillation under reduced pressure. The distillation is preferably conducted in the presence of high boiling organic solvents, such as propylene glycol and glycerol, with lysine, proline, or hydroxyproline being the preferred amino acids.
Another significant patent by De Hey relates to the preparation of flavor and fragrance materials. This invention involves oxidizing a solution of carotene in an aprotic solvent under the influence of ultraviolet light. The carotene used can be synthetic or extracted from carotene-containing vegetable materials or microorganisms suitable for human consumption. The reaction is ideally carried out at ambient temperature with UV light wavelengths ranging from 350 to 560 nm.
Career Highlights
Johannes T De Hey is associated with Unilever Patent Holdings B.V., where he continues to contribute to innovative research and development in the field of flavor and fragrance chemistry. His work has been instrumental in advancing the methodologies used in the preparation of essential compounds.
Collaborations
Throughout his career, De Hey has collaborated with notable colleagues, including Harrie Renes and Jan Visser. These collaborations have further enriched his research and development efforts.
Conclusion
Johannes T De Hey's innovative work in the preparation of flavor and fragrance materials showcases his expertise and commitment to advancing chemical processes. His contributions are significant in the field, and his patents reflect a dedication to innovation and quality.