Cited in | Search | Type: | Patent literature | Publication No.: | DE4218268
[A] (BOEHRINGER INGELHEIM KG [DE]) [A] 1* claims 1-4 *; | Type: | Patent literature | Publication No.: | EP0591978
[A] (MITSUI TOATSU CHEMICALS [JP]) [A] 1-5 * claims 1-7 * | Cited in | by applicant | Type: | Patent literature | Publication No.: | US4810775
| Type: | Patent literature | Publication No.: | US4960866
| Type: | Patent literature | Publication No.: | US5310865
|