Nokia Matkapuhelimet Oy

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USPTO Granted Patents = 2

Forward Citations = 31

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3 inventors (with patents filed for the assignee):

Tapani Ritoniemi (2 out of 9 patents)

Hannu Tenhunen (2 out of 3 patents)

Teppo Karema (2 out of 3 patents)

2 patents: Sort by Forward Citations

1. 5248972 - Delta-sigma analog-to-digital converter with overload dependent (1993-09-28),

2. 5191331 - Sigma-delta modulator for a D/A converter with pseudorandom jitter (1993-03-02),

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USPTO Data Jan 1 1976 - Oct 27 2026

2 Patents

#11 in Salo

#1,028 in Finland

Salo, Finland

Nokia Matkapuhelimet Oy

Forward Citations = 31

3 inventors:

Tapani Ritoniemi (2 out of 9 patents)

Hannu Tenhunen (2 out of 3 patents)

Teppo Karema (2 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nokia Matkapuhelimet Oy. Retrieved from https://idiyas.com/company/nokia-matkapuhelimet-oy

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]