Process for Synthesizing Oil and Surfactant-free Hyaluronic Acid Nanoparticles and Microparticles (open access)

Process for Synthesizing Oil and Surfactant-free Hyaluronic Acid Nanoparticles and Microparticles

Patent relating to a process for synthesizing oil and surfactant-free hyaluronic acid nanoparticles and microparticles.
Date: November 3, 2004
Creator: Hu, Zhibing; Xia, Xiaohu & Tang, Liping
System: The UNT Digital Library
Train-Order Signal. (open access)

Train-Order Signal.

Patent for a train order signal device, which sets off an alarm or signal when the train order pad is removed, which cannot be turned off until the pad is replaced.
Date: November 24, 1908
Creator: Van Zandt, Luther H.
System: The Portal to Texas History