Dr. Yonglin Ju: Patents

Columbia University's Department of Physics Nevis Laboratories 136 South Broadway, P. O. Box 137, Irvington, NY 10533 Phone: 914-591-2802, Fax: 914-591-8120 e-mail: ju@nevis.columbia.edu

Patents

1. Ju, Y. L. Yuan, K. Jing, W. Hou, Y. K. Liang, J. T. and Zhou, Y, Cryogen-free operation of HTS filter subsystems integrated with two-stage co-axial pulse tube< refrigerator, Chinese Patent, 02125555.5
2. Ju, Y. L. Zhang, L. H. Hou, Y. K. and Liang, J. T. Pulse tube refrigerator integrated with a cryogenic heat pipe for cooling/heat transfer, Chinese Patent: 02123950.9
3. Ju, Y. L. Zhang, L. H. Hou, Y. K. and Liang, J. T. Pulse tube refrigerator integrated with a cryogenic heat pipe for cooling/heat transfer, Chinese Patent: 02239737.X
4. Ju, Y. L. A parallel anti-phase pulse tube refrigerator with a counter-flow heat exchanger. Chinese Patent, No. 01204596.9
5. Ju, Y. L. Dang, H. Z. and Zhou, Y. A non-magnetic co-axial pulse tube cryocooler with low mechanical vibration, Chinese Patent, No. 02123951.7
6. Ju, Y. L. Dang, H. Z. and Zhou, Y. A non-magnetic co-axial pulse tube cryocooler with low mechanical vibration, Chinese Patent, No. 02239738.8
7. Ju, Y. L. A simple system for the adjustment of gas phase shifting at cold end of the pulse tube refrigerator, Chinese Patent, No. 01203696.X
8. Ju, Y. L. Anti-phase gas-cycle refrigerator without regenerator, Chinese Patent, No. 01109092.8
9. Ju, Y. L. and Zhou, Y. A new kind of high efficient rotary valve for adjusting phase angle, Chinese Patent, No. 97226279.2

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