I am curious to learn about what people know of 3dfx technology in nVidia's hardware made after 2000.

For example, I have a Galaxy KFA² GeForce 8800 GT.

On the backside bottom of the box the TRADEMARK INFORMATION reads:
NVIDIA, the NVIDIA logo, 3DFX, 3DFX INTERACTIVE, the 3dfx Logo, STB, STB Systems and Design, the STB Logo, the StarBox Logo, NVIDIA nForce, GeForce, NVIDIA Quadro, NVDVD, NVIDIA Personal Cinema, NVIDIA Soundsform, Vanta, TNT2, TNT, RIVA, RIVA TNT, VOODOO, VOODOO GRAPHICS, WAVEBAY, Accuview Antialiasing, the Audio & Nth Superscript Design Logo, CineFX, the Communications & Nth Superscript Design Logo, Detonator, Digital Vibrance Control, DualNet, FlowFX, Forceware, GIGADUDE, Glide, GOFORCE, the Graphics & Nth Superscript Design Logo, Intllisample, M-BUFFER, nfiniteFX, NV, NVChess, nView, NVKeystone, NVOptimizer, NVPinball, NVRotate, NVSensor, NVSync, the platform & Nth Superscript Design Logo, Power Mizer, Quincunx Antialiasing, Sceneshare, See What You've Been Missing, StreamThru, SuperStability, T-BUFFER, The Way It's Meant to be Played Logo, TwinBank, TwinView and the Video & Nth Superscript Design Logo are registered trademarks or trademarks of NVIDIA Corporation in the United States and/or other countries.  Other company and product names may be trademarks or registered trademarks of the respective owners with wich they are associated.

I have never seen 3dfx be noted on a nvidia box before

Stanadard legal boilerplate.

If you don't claim IP over a period of time it can fall into disuse and a shrewed company can lay claim to it.

kind of ironic,as the fx series were the probably the worst series of cards nvidia ever made.