Location History:
- Blacksburg, VA (US) (1995)
- Kaohsiung, TW (1996)
Company Filing History:
1 out of 784 
1 out of 142 
1 out of 68 
Years Active: 1995-1996
Title: Tawei Sun: Innovator in Thin Film Coatings
Introduction
Tawei Sun is a prominent inventor based in Blacksburg, Virginia, known for his contributions to the field of thin film coatings. He holds two patents that showcase his innovative approaches to material science and engineering.
Latest Patents
One of his latest patents involves magnesium doped β-aluminum titanate thin film coating. This protective coating, denoted as Mg.sub.x Al.sub.2-2x Ti.sub.1+x O.sub.5 (x ≤ 0.2), has been developed for both dense and porous substrates, such as SiC and Si.sub.3 N.sub.4. The coating is created using a chemical solution processing method that includes the hydrolysis and condensation of magnesium, aluminum, and titanium precursors. The optimal conditions for achieving crack-free coatings include solution viscosities ranging from 1.0 to 6.2 cP, pH values between 1 and 4.5, H.sub.2 O/alkoxide molar ratios of 1.5 to 10, and dip coating withdrawal rates of 2.2 to 8.0 cm/min. The conversion of the amorphous coating to crystalline form is accomplished through a series of calcination processes below 450°C, followed by a final heat treatment above 1000°C for ten hours with controlled heating and cooling rates.
Another significant patent by Tawei Sun is the sol-gel β-aluminum titanate thin film coating, represented as β-Al.sub.2 TiO.sub.5. This protective coating has also been developed for dense and porous ceramics, utilizing a similar chemical solution processing method involving aluminum tri-sec butoxide and titanium butoxide. The required conditions for achieving crack-free β-Al.sub.2 TiO.sub.5 include solution viscosities of 1.0 to 6.2 cP, pH values from 1 to 4.5, molar ratios of 1.5 to 10, and withdrawal rates of 2.2 to 8.0 cm/min. The conversion to crystalline β-Al.sub.2 TiO.sub.5 is achieved through calcination below 450°C and a final heat treatment at 1300°C for ten hours.
Career Highlights
Tawei Sun has worked with notable organizations such as Virginia Tech Intellectual Properties, Inc. and the Center
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.