Tsoung Y Yan

6399812, Jun 4, 2002

Apr 27, 2000

09/559339

Tsoung Y. Yan - Philadelphia PA, 19130
Jen-Ray Chang - Chia-Yi, TW

C07C 6902

560231, 560248

Aliphatic esters, RCOOR are produced by reacting the corresponding alcohol, ROH having carbon numbers of the alkyl groups, Râ and R, between 0 and 9 and 1 and 10, respectively, with molecular oxygen in the presence of a dual functional catalyst comprising metal on acidic solid support. In particular, the process is used advantageously for production of ethyl acetate by conversion of ethanol. The reaction mixture from the reactor is separated through azeotropic distillation to recover the ethyl acetate as product and the by-product, acetaldehyde and acetic acid which could be recycled for further reaction. The process is characterized by high conversion of ethanol, high selectivity and high yield for ethyl acetate and low waste stream generation. The preferred catalyst is Pd on zeolites which is active, selective, stable and regenerable.

6953870, Oct 11, 2005

Aug 26, 2002

10/227637

Tsoung Y Yan - Philadelphia PA, US
Tsang-po Yan - Taipei, TW
Tsung-che Yen - Tainan Hsien, TW

C10L003/12

585 14, 585 6, 208 15, 44300, 48197 FM, 48199 FM

A composition and use of economical, high efficient burning and environmentally friendly self-propelled liquid fuel for domestic, commercial and industrial application is provided. The fuel could be self-contained for application in small and isolated locations. The fuel is characterized by containing light hydrocarbons as a propellant and low value, heavier hydrocarbon by-products from the refining operations.

7060236, Jun 13, 2006

Oct 21, 2002

10/274551

Tsoung Y. Yan - Philadelphia PA, US
Jen-Ray Chang - Chia-Yi, TW

C07C 11/24

4232453, 588320, 588405

A continuous and regenerative process for removal and destruction of VOC from effluents is disclosed. The process employs two fixed bed reactors in series filled with adsorbent/catalyst. The VOC containing effluent is passed over the first reactor for adsorbing VOC, while the second reactor, which is loaded with VOC from the previous cycle is regenerated with part of the treated gas made up with an appropriate amount of air. Just before the VOC breakthrough occurs at the first reactor, the roles of the two reactors are switched. The process is characterized by simple design, high VOC removal efficiency, no external heat requirement and low operation cost.

8506820, Aug 13, 2013

Jan 6, 2012

13/345359

Ping-Wen Yen - Taipei, TW
Yuh-Sheve Ho - Taipei, TW
Hung-Tzu Chiu - Taipei, TW
Chung-Jong Hwu - Taipei, TW
June-Cheng Chang - Taipei, TW
Tzong-Bin Lin - Taipei, TW
Tsoung Y. Yan - Philadelphia PA, US
Cheng-Tsung Hong - Taipei, TW
Hung-Chung Shen - Taipei, TW

CPC Corporation, Taiwan - Taipei

B01D 35/06
B03C 1/14

210695, 210805, 210806, 210634, 210790, 210223, 209214, 209215, 585857

A continuous online process for rejuvenating whole stream of contaminated lean sulfolane in an extraction system is provided. A rejuvenator is installed in the solvent circulation loop to remove the contaminants continuously to keep the solvent clean, effective and less corrosive. The rejuvenator includes a high pressure vessel with a removable cover and a round rack with vertical stainless steel tubes fitted in the high pressure vessel. A magnetic bar is placed in each stainless steel tube. A screen cylinder is installed outside the ring of stainless steel tubes. As the contaminated sulfolane is passed through the rejuvenator, the rejuvenator picks up contaminants. The rejuvenator can be dissembled to remove the contaminants periodically. The rejuvenator is simple in construction, reliable in operation, and low in operation and maintenance costs. With this rejuvenator, the extraction system operates at high efficiency and high capacity without the dreaded corrosion.

20090272702, Nov 5, 2009

Apr 30, 2008

12/112623

Ping-Wen Yen - Taipei City, TW
Yuh-Sheve Ho - Taipei City, TW
Hung-Tzu Chiu - Taipei City, TW
Chung-Jong Hwu - Taipei City, TW
June-Cheng Chang - Taipei City, TW
Tzong-Bin Lin - Taipei City, TW
Tsoung Y. Yan - Philadelphia PA, US
Cheng-Tsung Hong - Taipei City, TW
Hung-Chung Shen - Taipei City, TW

B01D 35/06
B01D 37/00

210806, 210223

A continuous online process for rejuvenating whole stream of contaminated lean sulfolane in an extraction system is provided. In particular, a rejuvenator is installed in the solvent circulation loop to remove the contaminants continuously to keep the solvent clean, effective and less corrosive. Specifically, the rejuvenator comprises a high pressure vessel with a removable cover and a round rack with vertical stainless steel tubes fitted in the high pressure vessel. A magnetic bar is placed in each stainless steel tube. A screen cylinder is installed inside the ring of stainless steel tubes. As the contaminated sulfolane is passed through the rejuvenator, the rejuvenator picks up its contaminants. The rejuvenator can be dissembled to remove the contaminants periodically. The rejuvenator is characterized by simple in construction, reliable in operation, and low in operation and maintenance costs. With this rejuvenator, the extraction system can be operated at high efficiency and high capacity without the dreaded corrosion.

20100065504, Mar 18, 2010

Oct 21, 2009

12/589314

Ping-Wen Yen - Taipei City, TW
Yuh-Sheve Ho - Taipei City, TW
Hung-Tzu Chiu - Taipei City, TW
Chung-Jong Hwu - Taipei City, TW
June-Cheng Chang - Taipei City, TW
Tzong-Bin Lin - Taipei City, TW
Tsoung Y. Yan - Philadelphia PA, US
Cheng-Tsung Hong - Taipei City, TW
Hung-Chung Shen - Taipei City, TW
Jeng-Cheng Lee - Taipei City, TW
Fu-Ming Lee - Katy TX, US

B03C 1/02

210695, 210222

A novel design of filters for removing iron rust particulates and other polymeric sludge from refinery and chemical process streams that are paramagnetic in nature is provided. The performance of these filters is greatly enhanced by the presence of the magnetic field induced by magnets. Basically, the filter comprises a high-pressure vessel with means to support the plurality of magnets in the form of bars or plates that are encased in stainless steel tubes or columns. Filters with various configurations are disclosed for accommodating the removal of contaminants from the process streams of different industries, with high efficiency for contaminants removal, simple construction, low operational and maintenance costs, and low hazardous operation.

20120228231, Sep 13, 2012

May 13, 2012

13/470340

Ping-Wen Yen - Taipei, TW
Yuh-Sheve Ho - Taipei, TW
Hung-Tzu Chiu - Taipei, TW
Chung-Jong Hwu - Taipei, TW
June-Cheng Chang - Taipei, TW
Tzong-Bin Lin - Taipei, TW
Tsoung Y. Yan - Philadelphia PA, US
Cheng-Tsung Hong - Taipei, TW
Hung-Chung Shen - Taipei, TW
Jeng-Cheng Lee - Taipei, TW
Fu-Ming Lee - Katy TX, US

CPC Corporation, Taiwan - Taipei

B03C 1/30

210695

A novel design of filters for removing iron rust particulates and other polymeric sludge from refinery and chemical process streams that are paramagnetic in nature is provided. The performance of these filters is greatly enhanced by the presence of the magnetic field induced by magnets. Basically, the filter comprises a high-pressure vessel with means to support the plurality of magnets in the form of bars or plates that are encased in stainless steel tubes or columns. Filters with various configurations are disclosed for accommodating the removal of contaminants from the process streams of different industries, with high efficiency for contaminants removal, simple construction, low operational and maintenance costs, and low hazardous operation.

41039637, Aug 1, 1978

Mar 25, 1977

5/781238

Wilton F. Espenscheid - Princeton NJ
Israel J. Heilweil - Princeton NJ
Tsoung Y. Yan - Philadelphia PA

Mobil Oil Corporation - New York NY

E21B 4328

299 4

A method of controlling calcite in an in situ leaching operation by retarding the growth of calcite crystals in the lixiviant only for the resident time that the lixiviant is in a critical area of the leach circuit and then allowing the calcite to precipitate from the lixiviant in a noncritical area. A chemical inhibitor, e. g. , sodium hexametaphosphate, is added to the lixiviant as the lixiviant enters a critical area, e. g. , from the bottom of a production well to surface processing equipment. The inhibitor is added to the lixiviant in an amount sufficient only to retard calcite precipitation while the lixiviant moves through a critical area but not to seriously impede calcite precipitation after the lixiviant exits the critical area.