For the Inventor, By the Inventor

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Lowell, MA, United States of America

Netnumber, Inc.

USPTO Granted Patents = 4

% Expired Patents = 25.0

Trademarks = 8

Forward Citations = 101

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7 inventors (with patents filed for the assignee):

Douglas J Ranalli (2 out of 15 patents)

David P Peek (2 out of 7 patents)

Robert H Walter (1 out of 1 patent)

4. Thomas P Sosnowski (1 out of 6 patents)

5. Douglas Ranalli (1 out of 1 patent)

6. Chuck Santos (1 out of 1 patent)

7. Robbin W Wells (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 12499148 - Apparatus and method for providing telecommunication routing data (2025-12-16),

2. 12368801 - Verified calling party information display confirmation system (2025-07-22),

3. 7522931 - Method and apparatus for accessing a network computer to establish a push-to-talk session (2009-04-21),

4. 6748057 - Method and apparatus for correlating a unique identifier, such as a PSTN telephone number, to an internet address to enable communications over the internet (2004-06-08),

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USPTO Data Jan 1 1976 - Sep 29 2026

4 Patents

#37 in Lowell, MA

#3,308 in Massachusetts

#60,561 in US

Lowell, MA, United States of America

Netnumber, Inc.

Forward Citations = 101

7 inventors:

Douglas J Ranalli (2 out of 15 patents)

David P Peek (2 out of 7 patents)

Robert H Walter (1 out of 1 patent)

4. Thomas P Sosnowski (1 out of 6 patents)

5. Douglas Ranalli (1 out of 1 patent)

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