A few that stood out for me…
Bandai “Hyper Infiniti” Museum of Yo-Yo History - Patent 7,448,934 (there are three other patents for a motorized yo-yo, all filed by Hans)
Tom Kuhn “SB-3” Museum of Yo-Yo History - Patent 6,331,132. The German Mondial (which you have listed) may have patents too. Just haven’t looked them up in Germany.
Doble “Ariel” Museum of Yo-Yo History and “Calypso” Museum of Yo-Yo History - patents listed in the exhibits. A fascinating and very functional design for being a fixed axle.
Many more, but I know you’re a resourceful person.
On a side note: I believe the Yomega “Outrageous” was the forerunner–in name only–to the Fireball (which you have on the list, patent 4,895,547). Essentially the same body design for both but the Outrageous came out earlier.
The Oxygene “Oxy 3” from July, 2004 set the early benchmark for impeccable, high quality, unresponsive aluminum yo-yos. What the CLYW Peak was to players in the mid to late 2000s, the Oxy 3 was to me and many others in the early 2000s. If you were into yo-yoing and forum talk back then, you’ll certainly remember that particular release. It came out of a world of wood and plastic at the turn of the century. For me, personally, the Oxy 3 marks the beginning of modern, high quality (and expensive) 1A playing yo-yos (ironically, it’s also the yo-yo that completely killed my interest in throwing and collecting for the next 10 years. Why? I refused to learn how to bind).
The SuperYo Samurai was also a standout in 1999. Other makers such as Basecamp, Custom Yo-Yo, and Spyy have followed suit (some many years later) with similar design approaches to hollow bodied aluminum yos.
Thanks for your post. It was enjoyable to reminisce…