After completing his doctorate during 1957 in oil and coal chemistry and technology at the University of Karlsruhe, Germany, Dr. During 1961 he became a partner of the firm which was renamed Drs. In September 1993 Hahn & Hahn merged with South Africa's largest general law firm Webber Wentzel Bowens.
These clients enjoy the benefit of over 50 years experience in Design, Patent and Trademark prosecution and litigation. W A Hahn who arrived in South Africa from Europe during 1948 where he had previously been engaged for 20 years in the multinational chemical industry as a patent expert. From these beginnings the firm grew steadily and continues to do so.
While qualifying as a South African patent agent, Dr. Hans Hahn was an international intellectual property adviser to several multinational companies.
Hahn was engaged in conducting international license negotiations for the South African Coal, Oil and Gas corporation Ltd. Hahn, at Pretoria where the South African Patents and Trade Marks Office and Courts are situated. His technical fields of experience include chemistry (including pharmaceuticals, biotechnology, petrochemistry); chemical engineering; conventional and alternative energy; natural and synthetic oils; bituminous substances; wood and pulp technologies; mining, prospecting, and mineral beneficiation; metallurgy; separation methods and apparatus; ecology; energy saving and industrialised buildings.
(SASOL) and setting up SASOL's patent and documentation department, initially under his full time direction. For some years the firm continued to manage SASOL's patent department on a part time basis. Hahn re-established his past (mostly pre-war) contacts with industry and colleagues all over the world. Hahn joined the firm as a full time assistant, qualifying as a patent agent in 1959. During the period in which Hans was active at Hahn & Hahn, Hahn & Hahn expanded into a fully fledged Africa practice and files patent and trade mark applications in ARIPO, OAPI, South Africa, Angola, Nigeria, Egypt and other African countries.
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