Patent title:  An optical probe for  quantitative evaluation/measurement  of defects in a ferromagnetic material component      


Patent title: An optical probe for qualitative evaluation/measurement of defects in a ferromagnetic material component   


Patent title:A process for producing articles of metals, alloys and ceramics with etched surfaces and an apparatus for laser based etching of the said articles


Patent title: A tunable optical filter


Patent title: An improved  apparatus for measuring colloidal forces


Patent title:Stabilized magnetic emulsion and a process of making it


Patent title:A new process for hard chromium nitride coating using a metal-organic source and a plasma assisted technique.

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