For the Inventor, By the Inventor

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Stockholm, Sweden

Opticast Ab

USPTO Granted Patents = 2

Forward Citations = 16

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6 inventors (with patents filed for the assignee):

Guocai Chai (1 out of 9 patents)

Lennart Bäckerud (1 out of 2 patents)

Lars Arnberg (1 out of 3 patents)

4. Lennart Backerud (1 out of 1 patent)

5. Mats Johnsson (1 out of 1 patent)

6. Geoffrey Sigworth (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 6267829 - Method of reducing the formation of primary platelet-shaped beta-phase in iron containing alSi-alloys, in particular in Al-Si-Mn-Fe alloys (2001-07-31),

2. 6073677 - Method for optimization of the grain refinement of aluminum alloys (2000-06-13),

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USPTO Data Jan 1 1976 - Dec 16 2025

2 Patents

#281 in Stockholm

#2,126 in Sweden

Stockholm, Sweden

Opticast Ab

Forward Citations = 16

6 inventors:

Guocai Chai (1 out of 9 patents)

Lennart Bäckerud (1 out of 2 patents)

Lars Arnberg (1 out of 3 patents)

4. Lennart Backerud (1 out of 1 patent)

5. Mats Johnsson (1 out of 1 patent)

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