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For the Inventor, By the Inventor

Oulu, Finland

Tarmo Ruotsalainen

This inventor holds 17 USPTO granted patents and 6 EPO patents. Top assignees: Nokia Corporation, Telefonaktiebolaget Lm Ericsson (Publ), Nokia Mobile Phones Limited. Active years: 2002-2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tarmo Ruotsalainen. Retrieved from https://idiyas.com/inventor/tarmo-ruotsalainen

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

USPTO Granted Patents = 17

% Patents Active = 82.4

 

Average Co-Inventor Count = 3.0

ph-index = 8

Forward Citations = 377(Granted Patents)


Location History:

  • Oulu, FI (2002 - 2020)
  • Haukipudas, FI (2020)

Company Filing History:

goldMedal12 out of 8,283 
 
Nokia Corporation
 patents
silverMedal4 out of 27,011 
 
Telefonaktiebolaget Lm Ericsson (Publ)
 patents
bronzeMedal1 out of 1,965 
 
Nokia Mobile Phones Limited
 patents

Years Active: 2002-2020

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17 patents (USPTO):Explore Patents
1. RE47832 - Clock generation circuit with fast-startup standby mode (2020-01-27),
2. 10528110 - Method for diagnosing power supply failure in a wireless communication device (2020-01-07),
3. 9768690 - Switched mode power supply output stage configuration (2017-09-19),
4. 9484893 - Clock generation circuit with fast-startup standby mode (2016-11-01),
5. 8965304 - Multi-mode I/O circuitry supporting low interference signaling schemes for high speed digital interfaces (2015-02-24),
6. 8023923 - Mixer circuit (2011-09-20),
7. 7702293 - Multi-mode I/O circuitry supporting low interference signaling schemes for high speed digital interfaces (2010-04-20),
8. 7239183 - Active current mode sampling circuit (2007-07-03),
9. 7058463 - Method and apparatus for implementing a class D driver and speaker system (2006-06-06),
10. 6819177 - Electronic circuit for a switching power amplifier and method for switching the output stage of a switching power amplifier (2004-11-16),
11. 6768437 - Switched voltage-mode dither signal generation for a sigma-delta modulator (2004-07-27),
12. 6577258 - Adaptive sigma-delta data converter for mobile terminals (2003-06-10),
13. 6535155 - Method and apparatus for suppressing tones induced by cyclic dynamic element matching (DEM) algorithms (2003-03-18),
14. 6507171 - Method and apparatus for measuring battery charge and discharge current using a direct analog-to-digital conversion of a charge/discharge replica current (2003-01-14),
15. 6473019 - Low capacitance, low kickback noise input stage of a multi-level quantizer with dithering and multi-threshold generation for a multi-bit sigma-delta modulator (2002-10-29),

Title: Tarmo Ruotsalainen: Innovator in Wireless Communication Technology

Introduction

Tarmo Ruotsalainen is a prominent inventor based in Oulu, Finland. He holds a total of 17 patents that showcase his contributions to the field of wireless communication technology. His innovative work has significantly impacted the efficiency and reliability of communication devices.

Latest Patents

One of Ruotsalainen's latest patents is a "Clock generation circuit with fast-startup standby mode." This invention allows a clock generation circuit to operate in a STANDBY mode, applying a small pre-bias current to amplifiers. This design minimizes transient perturbations when transitioning from STANDBY to ON mode, enabling faster startup times. Such rapid transitions are crucial for systems that need to monitor and respond quickly to external activities, such as RF modems.

Another notable patent is the "Method for diagnosing power supply failure in a wireless communication device." This method enables a wireless communication device to detect power supply failures and collect diagnostic data from its power management unit (PMU). The device can store this data to diagnose issues effectively, ensuring reliability in communication.

Career Highlights

Throughout his career, Tarmo Ruotsalainen has worked with leading companies in the telecommunications industry, including Nokia Corporation and Telefonaktiebolaget Lm Ericsson. His experience in these organizations has allowed him to develop cutting-edge technologies that enhance wireless communication.

Collaborations

Ruotsalainen has collaborated with notable professionals in the field, including Antti Ruha and Jussi-Pekka Tervaluoto. These collaborations have contributed to the advancement of innovative solutions in wireless technology.

Conclusion

Tarmo Ruotsalainen's contributions to wireless communication technology through his patents and collaborations highlight his role as a key innovator in the industry. His work continues to influence the development of efficient communication devices.

Profile summary based on public USPTO records.
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]
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