There could be thousands of example like above. Basically the Question of whether to disallow Cenvat credit on Research & Development Activity components or not is a Question of fact. Thus unless very similar judgement is found, no general interpretation could be framed.
Also, in the case of Singh Alloys & steel Ltd(cal) it was held that "it is immaterial whether the final product could be manufactured with or without a particular input actually used."
Also, it is not for the court to decide how research & development should be done for each product or process. it depends on the nature & custom of the specific industry . Thus in my opinion, which is based on rule 2(k) and the rule of harmonious interpretation of law, u should claim credit..