What Rocket Am I?: Quiz 14

Clue 1: I use liquid hydrogen/oxygen propellants.
Clue 2: I was developed by NASDA.
Clue 3: I was first launched in 1994.
Clue 4: I am Japan's first fully domestic liquid-fueled rocket.
Clue 5: I launched the OREX reentry test vehicle.
Clue 6: My payload to geostationary transfer orbit is 3,930 kg.
Clue 7: I stand 49 meters tall.

Yes, I am H-II.

I paved the way for Japan's H-IIA and H-IIB successors.