This inventor holds 6 USPTO granted patents. Top assignees: Mycogen Plant Science, Inc., Lubrizol Genetics, Inc., Mycoen Plant Science, Inc.. Active years: 1993-1998.
Location History:
- Paris, US (1995)
- Paris, FR (1993 - 1998)
Company Filing History:
3 out of 51 
1 out of 35 
1 out of 1 
Years Active: 1993-1998
Title: David A Tepfer: Innovator in Plant Genetic Transformation
Introduction
David A Tepfer is a notable inventor based in Paris, France. He has made significant contributions to the field of plant genetic transformation, holding a total of 6 patents. His work focuses on enhancing the ornamental characteristics of plants and the manipulation of genetic sequences for agricultural advancements.
Latest Patents
One of Tepfer's latest patents involves the disclosure of Ri T-DNA promoters. This patent reveals the sequence of the T.sub.L -DNA of Ri plasmids found in Agrobacterium rhizogenes strains HRI and A4. It identifies sixteen open reading frames bounded by eukaryotic promoters, ribosome binding sites, and polyadenylation sites. Five of these frames are observed to be transcribed in a developmentally and phenotypically regulated manner. The patent teaches the use of promoters and polyadenylation sites from pRi T.sub.L -DNA to control the expression of heterologous foreign structural genes, including those for Phaseolus vulgaris storage protein, P. vulgaris lectin, a sweet protein, and Bacillus thuringiensis crystal protein. Additionally, it provides vectors useful for manipulating sequences of the structural genes and T-DNA.
Another significant patent by Tepfer discloses a method for genetically transforming plants of the genus Pelargonium using Agrobacterium rhizogenes. The transformants exhibit improved ornamental characteristics, such as a tighter, more globular shape, unwrinkled leaves, and increased fragrance. Under certain conditions, these transformants show greater resistance to yellowing and flower earlier than controls.
Career Highlights
Throughout his career, David A Tepfer has worked with prominent companies in the field, including Mycogen Plant Science, Inc. and Lubrizol Genetics, Inc. His innovative approaches have contributed to advancements in plant genetics and biotechnology.
Collaborations
Tepfer has collaborated with notable individuals in his field, including Jerry L Slightom and Jean-Pierre Damon. These collaborations have further enriched his research and development efforts.
Conclusion
David A Tepfer's contributions to plant genetic transformation and his innovative patents have significantly impacted the field of biotechnology. His work continues to inspire advancements in agricultural practices and ornamental plant development.