T 0958/90 (Sequestering agent/DOW) of 04.12.1992
- European Case Law Identifier
- ECLI:EP:BA:1992:T095890.19921204
- Date of decision
- 4 December 1992
- Case number
- T 0958/90
- Petition for review of
- -
- Application number
- 84307772.8
- IPC class
- C11D 3/33
- Language of proceedings
- English
- Distribution
- Distributed to board chairmen and members (B)
- Download
- Decision in English
- OJ versions
- No OJ links found
- Other decisions for this case
- -
- Abstracts for this decision
- -
- Application title
- Mixtures containing nitrilotriacetic acid and iminodiacetic acid (or salts thereof) as a sequestering agent
- Applicant name
- The Dow Chemical Company
- Opponent name
- BASF Aktiengesellschaft, Ludwigshafen
- Board
- 3.3.01
- Headnote
- -
- Relevant legal provisions
- European Patent Convention Art 123(2) 1973European Patent Convention Art 123(3) 1973European Patent Convention Art 54(1) 1973European Patent Convention R 58(2) 1973
- Keywords
- Change of category, new use (no)
- Catchword
- 1. The question of the admissibility of a change of category from a composition claim to a method of preparing the composition is left open (not decisive; point 4 of the reasons).
2. The use of a known physical entity for a known purpose does not represent a new technical teaching in the sense addressed in G 2/88 and G 6/88, if a hitherto unknown increase in activity occurs (point 6 of the reasons).
ORDER
For these reasons, it is decided that
The appeal is dismissed.