Company Filing History:
1 out of 1 
1 out of 124 
1 out of 10 Years Active: 1990-2006
Title: Reijo Hakkarainen: Innovator in Key and Lock Technology
Introduction
Reijo Hakkarainen is a notable inventor based in Joensuu, Finland. He has made significant contributions to the field of key and lock technology, holding a total of 3 patents. His innovative designs focus on enhancing security and functionality in locking mechanisms.
Latest Patents
Hakkarainen's latest patents include a key and lock device and a cylinder lock. The key and lock device features a key with a first electronic circuit and a lock with a second electronic circuit. Both components store secret information unique to each device. They exchange a random number through connectors and perform calculations based on this number and the stored secret information. If the calculations match, an electrical blocking mechanism is moved to a non-blocking position, allowing access.
The cylinder lock comprises a lock body and a rotatable lock cylinder that contains several locking discs. These discs are turnable by the key and are designed with a peripheral notch that determines the lock's combination. The locking bar prevents the lock cylinder from turning unless the correct combination is used. This innovative design includes additional features to enhance security and prevent unauthorized access.
Career Highlights
Throughout his career, Hakkarainen has worked with prominent companies such as Assa Abloy and Wärtsilä Corporation. His experience in these organizations has contributed to his expertise in developing advanced locking systems.
Collaborations
Hakkarainen has collaborated with notable individuals in the industry, including Inge Lidén and Rolf Norberg. These partnerships have fostered innovation and the exchange of ideas in the field of security technology.
Conclusion
Reijo Hakkarainen's contributions to key and lock technology demonstrate his commitment to enhancing security through innovation. His patents reflect a deep understanding of the complexities involved in creating reliable locking mechanisms.