Yuanhai
Yuanhai Li, Yichang CN
Patent application number | Description | Published |
---|---|---|
20100152500 | METHOD OF PREPARING PENTAERYTHRITOL - A method of preparing monopentaerythritol, dipentaerthritol, and sodium formate through high temperature condensation and cascade recrystallization is disclosed. The method lowers the energy consumption dramatically and improves the cost-effectiveness by carrying out the reaction in a non-low-temperature zone, and thereby avoiding the requirement for refrigeration. The method alleviates the difficulty of separation and improves the product quality by means of cascade separation process, and thereby avoiding the low purity from a single separation. In addition, the mother liquor obtained after each separation step is recycled to the previous step as the recycling liquor, which avoids discharging waste, increases the product yield and lowers raw materials consumption. | 06-17-2010 |
Yuanhai Sun, Shanghai CN
Patent application number | Description | Published |
---|---|---|
20150364126 | ON-SITE SPEAKER DEVICE, ON-SITE SPEECH BROADCASTING SYSTEM AND METHOD THEREOF - Embodiments of the present disclosure provide a method of on-site speech broadcasting. The method includes receiving text signal, wherein the text signal is generated in response to a parameter reaching a predetermined value sensed by an on-site sensor ( | 12-17-2015 |
Yuanhai Tang, Shenzhen Guangdong CN
Patent application number | Description | Published |
---|---|---|
20150317321 | NETWORK INFORMATION DISPLAY METHOD, SYSTEM AND TERMINAL, AND INFORMATION DISPLAY PROCESSING DEVICE - A system to display network information is provided. The system may acquire a selected content on a web page, and search a website material database according to the selected content to obtain material matching the selected content. The system may send the matching material to a terminal, which may display the matching information at a specific area in a website right-click menu of the terminal. The system may record the selected content on the web page and send the selected content upon a right-click instruction When the material matching the selected content is received, the matching material may be displayed at the specific area in the website right-click menu. | 11-05-2015 |
Yuanhai Zhao, Hefei CN
Patent application number | Description | Published |
---|---|---|
20130231478 | Novel Intermediate for Preparing Tapentadol or Analogues Thereof - The invention discloses a novel intermediate for preparing tapentadol and analogues thereof, wherein the structural formula is shown as formula I or II, and the groups are defined as the specification. The invention further discloses a method for preparing the novel intermediate and use of the intermediate for preparing tapentadol and analogues thereof. The invention can remarkably improve the product yield and quality of tapentadol, reduce the production cost, and simplify the production procedure. The preparation process is environment friendly, thus more suitable for the requirements of industrial production. | 09-05-2013 |