Patent decision

BL number

O/180/04

Concerning rights in

GB 0030863.5

Hearing Officer

Mr R C Kennell

Decision date

18 June 2004

Person(s) or Company(s) involved

Degussa-Huls AG

Provisions discussed

PA 1977 section 1(1)(b)

Keywords

Inventive step

Related Decisions

None

Summary

The claims were directed to a hydrophobic, pyrogenically produced silica having a tamped density of 55-200 g/l, hydrophobised by reaction with a halogen-free silane or siloxane and compacted by a roller compactor or belt filter press. In an oral decision, the hearing officer held that the claims lacked inventive step in the light of a prior specification in the applicants name disclosing all these features except that the hydrophobising agent was not halogen-free.

Full decision O/180/04 41Kb