For the Inventor, By the Inventor

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Helsinki, Finland

Rondex Oy Ltd.

USPTO Granted Patents = 3

Forward Citations = 9

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7 inventors (with patents filed for the assignee):

Ari Juhani Piispanen (2 out of 6 patents)

Juha Varis (1 out of 6 patents)

Timo Kässi (1 out of 1 patent)

4. Veli Pekka Kujanpaa (1 out of 1 patent)

5. Timo Savinainen (1 out of 1 patent)

6. Timo Kassi, Deceased (1 out of 1 patent)

7. Timo Kassi (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 6233990 - Method for manufacturing a formed piece of metal (2001-05-22),

2. 6145362 - Process and apparatus for the manufacture of a cooking vessel by roll (2000-11-14),

3. 6061892 - Method for joining metal parts by roll forming for manufacturing a (2000-05-16),

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USPTO Data Jan 1 1976 - Dec 16 2025

3 Patents

#180 in Helsinki

#770 in Finland

Helsinki, Finland

Rondex Oy Ltd.

Forward Citations = 9

7 inventors:

Ari Juhani Piispanen (2 out of 6 patents)

Juha Varis (1 out of 6 patents)

Timo Kässi (1 out of 1 patent)

4. Veli Pekka Kujanpaa (1 out of 1 patent)

5. Timo Savinainen (1 out of 1 patent)

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