For the Inventor, By the Inventor

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Peabody, MA, United States of America

Renka Corporation

USPTO Granted Patents = 2

Forward Citations = 5

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5 inventors (with patents filed for the assignee):

Qiushui Chen (1 out of 10 patents)

Ravendra Kumar Varshney (1 out of 1 patent)

Ishwar Chandra Goyal (1 out of 1 patent)

4. Bishnu Pal (1 out of 1 patent)

5. Ajoy Ghatak (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 6697550 - Fast 1×N fiber-optic switch (2004-02-24),

2. 6650812 - Small residual dispersion fiber connected with a dispersion compensating fiber (2003-11-18),

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USPTO Data Jan 1 1976 - Jan 13 2026

2 Patents

#25 in Peabody, MA

#4,828 in Massachusetts

#92,762 in US

Peabody, MA, United States of America

Renka Corporation

Forward Citations = 5

5 inventors:

Qiushui Chen (1 out of 10 patents)

Ravendra Kumar Varshney (1 out of 1 patent)

Ishwar Chandra Goyal (1 out of 1 patent)

4. Bishnu Pal (1 out of 1 patent)

5. Ajoy Ghatak (1 out of 1 patent)

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