Tulku Urgyen Rinpoche was a highly revered Tibetan Dzogchen master who had a significant impact on the spread and preservation of the Dzogchen teachings. He had numerous students from different backgrounds and nationalities, but some of his notable students include Chökyi Nyima Rinpoche, Tsoknyi Rinpoche, and Mingyur Rinpoche.

Chökyi Nyima Rinpoche, the third son of Tulku Urgyen Rinpoche, was recognized as a tulku at a young age and received extensive teachings and transmissions from his father. He went on to establish the Ka-Nying Shedrub Ling Monastery in Nepal, which has become a prominent center for the study and practice of Tibetan Buddhism. Chökyi Nyima Rinpoche is also a prolific author and teacher, and continues to spread the teachings of Dzogchen around the world.

Tsoknyi Rinpoche, another prominent student of Tulku Urgyen Rinpoche, is the son of the famous Tibetan yogi, Tulku Urgyen's brother, Tulku Pema Rigtsal. He received teachings and transmissions from both his father and uncle, and has become a renowned teacher and meditation master in his own right. Tsoknyi Rinpoche is known for his accessible and humorous teaching style, and has established several monasteries and retreat centers in Nepal and Tibet.

Mingyur Rinpoche, the youngest son of Tulku Urgyen Rinpoche, was recognized as a tulku at the age of nine and received teachings and transmissions from his father. He has become a popular teacher and meditation master, and has written several books on meditation and mindfulness. Mingyur Rinpoche is also the founder of the Tergar Meditation Community, which has centers around the world and offers teachings and retreats on Tibetan Buddhism.

Apart from these notable students, Tulku Urgyen Rinpoche also had many other students who have become accomplished teachers and meditation masters, such as Dzigar Kongtrul Rinpoche, Orgyen Tobgyal Rinpoche, and Tenzin Palmo. His teachings and transmissions continue to be passed down through these students, ensuring the preservation and propagation of the Dzogchen tradition.

In conclusion, Tulku Urgyen Rinpoche had a profound impact on the lives of his students, who have gone on to become influential teachers and meditation masters in their own right. His teachings and transmissions continue to inspire and guide countless practitioners on the path of Dzogchen, making him a revered figure in the world of Tibetan Buddhism.