For the Inventor, By the Inventor

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Gabagnate Milanese, Italy

Optotec S.p.a.

USPTO Granted Patents = 2

EPO Patents = 1

Forward Citations = 2

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4 inventors (with patents filed for the assignee):

Lucio Duca (2 out of 2 patents)

Giuseppe Manfredda (1 out of 1 patent)

Antonio Menzaghi (1 out of 2 patents)

4. Enzo Longobardi (1 out of 1 patent)

5. Tommaso Pensato (0 patent)

2 patents: Sort by Forward Citations

1. 6654538 - Technique for realizing attenuators for optical fibers with attenuating fiber (2003-11-25),

2. 5742725 - Method and apparatus for forming fibre optic attenuators with spectral (1998-04-21),

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USPTO Data Jan 1 1976 - Jan 13 2026

2 Patents

#1 in Gabagnate Milanese

#3,159 in Italy

Gabagnate Milanese, Italy

Optotec S.p.a.

Forward Citations = 2

4 inventors:

Lucio Duca (2 out of 2 patents)

Giuseppe Manfredda (1 out of 1 patent)

Antonio Menzaghi (1 out of 2 patents)

4. Enzo Longobardi (1 out of 1 patent)

5. Tommaso Pensato (0 patent)

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