Addtek Research Development Oy Ab

Calculating rank

USPTO Granted Patents = 7

% Expired Patents = 42.9

Forward Citations = 43

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6 inventors (with patents filed for the assignee):

Kari Vappula (4 out of 11 patents)

Aimo Seppänen (2 out of 8 patents)

Lassi Järvinen (1 out of 13 patents)

4. Heikki Kankkunen (1 out of 3 patents)

5. Leo Sandqvist (1 out of 2 patents)

6. Arto Lähteenmäki (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 6998075 - Method for casting of concrete products (2006-02-14),

2. 6849211 - Method for fabricating a concrete product (2005-02-01),

3. 6841110 - Method and plant for manufacturing prestressed concrete products (2005-01-11),

4. 6742759 - Magnet unit for concrete moulds (2004-06-01),

5. 6547209 - Removable side system for a concrete mould (2003-04-15),

6. 6276657 - Removable side wall system for a casting mould (2001-08-21),

7. 6202978 - Removable side wall system for a casting mould (2001-03-20),

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USPTO Data Jan 1 1976 - Oct 27 2026

7 Patents

#19 in Vantaa

#403 in Finland

Vantaa, Finland

Addtek Research Development Oy Ab

Forward Citations = 43

6 inventors:

Kari Vappula (4 out of 11 patents)

Aimo Seppänen (2 out of 8 patents)

Lassi Järvinen (1 out of 13 patents)

4. Heikki Kankkunen (1 out of 3 patents)

5. Leo Sandqvist (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Addtek Research Development Oy Ab. Retrieved from https://idiyas.com/company/addtek-research-development-oy-ab

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]