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    V.sub.T reference voltage for extremely low power supply
    11.
    发明授权
    V.sub.T reference voltage for extremely low power supply 有权
    VT参考电压极低的电源

    公开(公告)号：US6100754A

    公开(公告)日：2000-08-08

    申请号：US128024

    申请日：1998-08-03

    Applicant: Yong K. Kim ,  Yasushi Kasa

    Inventor： Yong K. Kim ,  Yasushi Kasa

    IPC: H01L27/04 ,  G05F3/16 ,  G05F3/24 ,  G05F3/26 ,  H01L21/822 ,  G05F3/02

    CPC classification number: G05F3/262 ,  G05F3/247

    Abstract: A reference voltage generator circuit is provided for use with an extremely low power supply voltage. The reference voltage generator circuit produces a lower reference output voltage which is compensated for temperature variations and is independent of changes in the supply voltage. The reference output voltage relies upon the threshold voltage V.sub.T of a MOSFET transistor as a reference source.

    Abstract translation: 提供了一种用于极低电源电压的参考电压发生器电路。 参考电压发生器电路产生较低的参考输出电压，其被补偿温度变化，并且与电源电压的变化无关。 参考输出电压依赖于MOSFET晶体管的阈值电压VT作为参考源。

    Partial purification of wet-process phosphoric acid with acetone and ammonia
    12.
    发明授权
    Partial purification of wet-process phosphoric acid with acetone and ammonia 失效
    用丙酮和氨对湿法磷酸进行部分纯化

    公开(公告)号：US4152402A

    公开(公告)日：1979-05-01

    申请号：US881087

    申请日：1978-02-24

    Applicant: Henry K. Walters, Jr. ,  Yong K. Kim ,  John D. Hatfield

    Inventor： Henry K. Walters, Jr. ,  Yong K. Kim ,  John D. Hatfield

    IPC: C01B25/234 ,  C01B25/46 ,  C05B7/00 ,  C01B25/22 ,  C01B25/28

    CPC classification number: C05B7/00 ,  C01B25/234 ,  C01B25/463

    Abstract: An improved process for the purification of wet-process phosphoric acid (WPPA) with acetone and ammonia. The main product is the purified acid and a byproduct is the impure acid fraction in a liquid form containing most of the impurities including the added ammonia. The WPPA is mixed with acetone and the specified amount of ammonia to form two liquid phases that separate rapidly. The top layer contains about 75 percent of the phosphoric acid, nearly all the acetone, and a small fraction of the impurities. The bottom liquid layer has a viscosity usually in the range of 40 to 2500 centipoises, depending on the acid concentration and the amount of ammonia used. The acetone is distilled from the two liquid phases for recycle to the process.

    Abstract translation: 一种用丙酮和氨纯化湿法磷酸（WPPA）的改进方法。 主要产物是纯化的酸，副产物是含有大多数杂质（包括加入的氨）的液体形式的不纯的酸组分。 WPPA与丙酮和规定量的氨混合形成两个快速分离的液相。 顶层含有约75％的磷酸，几乎所有的丙酮和一小部分杂质。 底液层的粘度通常在40〜2500厘泊的范围内，这取决于酸的浓度和使用的氨的量。 从两个液相中蒸馏出丙酮以循环使用。

    High-analysis acid-type fertilizer solutions
    13.
    发明授权
    High-analysis acid-type fertilizer solutions 失效
    高分析酸式肥料解决方案

    公开(公告)号：US5049180A

    公开(公告)日：1991-09-17

    申请号：US450483

    申请日：1989-12-14

    Applicant: Alva W. Frazier ,  Yong K. Kim

    Inventor： Alva W. Frazier ,  Yong K. Kim

    IPC: C05B7/00 ,  C05G3/00

    CPC classification number: C05G3/0076 ,  C05B7/00

    Abstract: Unusually high-analysis low-temperature-stable solution-type fertilizers are produced by mixing urea and phosphoric acid with urea-ammonium nitrate solution (UAN). The ratio of P.sub.2 O.sub.5 to total nitrogen and the ratio of CO(NH.sub.2).sub.2 --N(nitrogen) to NH.sub.4 NO.sub.3 --N(nitrogen) must be maintained within broad specified parameters in order to ensure the production of the instant high-analysis clear-liquid fertilizers which are stable at temperatures as low as 0.degree. C. For example, to produce a 35 percent total plant nutrient (TPN) product, the weight ratio for P.sub.2 O.sub.5 :N (total) must be within the range of about 0.316 to about 0.538, the weight ratio of urea-N to NH.sub.4 NO.sub.3 --N+P.sub.2 O.sub.5 must be in the rang of 1.41 to 1.59, and the weight ratio of CO(NH.sub.2).sub.2 :NH.sub.4 NO.sub.3 must be in the range of 15.25 to 3.75. Similar solutions may be produced by dissolving solid urea and ammonium nitrate in pure or impure phosphoric acid or by utilizing urea.H.sub.3 PO.sub.4 obtained from impure wet-process type phosphoric acid or by mixing the urea phosphate with UAN. The pH of the resulting product solutions ranges from 2.0 at P.sub.2 O.sub.5 :N (total) of 0.33 to a pH of 1.6 when the P.sub.2 O.sub.5 :N (total) is 0.5.

    Abstract translation: 通过将尿素和磷酸与硝酸铵 - 硝酸铵溶液（UAN）混合来生产异常高分析的低温稳定溶液型肥料。 P2O5与总氮的比例以及CO（NH2）2-N（氮）与NH4NO3-N（氮）的比例必须保持在广泛的规定参数内，以确保即时高分析透明液体的生产 在低至0℃的温度下稳定的肥料。例如，为了产生35％的总植物营养物（TPN）产物，P2O5：N（总计）的重量比必须在约0.316至约0.538的范围内 ，尿素-N与NH4NO3-N + P2O5的重量比必须在1.41〜1.59范围内，CO（NH2）2：NH4NO3的重量比必须在15.25〜3.75的范围内。 可以通过将固体尿素和硝酸铵溶解在纯的或不纯的磷酸中，或者通过使用从不纯的湿法型磷酸获得的脲/ H 3 PO 4或通过将磷酸尿素与UAN混合来产生类似的溶液。 当P2O5：N（总计）为0.5时，所得产物溶液的pH在P2O5时为2.0：N（总计）为0.33至pH为1.6。

    Process for the production of solid urea-nitric phosphate fertilizer products
    14.
    发明授权
    Process for the production of solid urea-nitric phosphate fertilizer products 失效
    固体尿素 - 磷酸盐肥料生产工艺

    公开(公告)号：UST105301I4

    公开(公告)日：1985-04-02

    申请号：US612162

    申请日：1984-05-21

    Applicant: Jack M. Sullivan ,  Yong K. Kim ,  Kjell R. Waerstad

    Inventor： Jack M. Sullivan ,  Yong K. Kim ,  Kjell R. Waerstad

    IPC: C05B11/06 ,  C05C9/00

    CPC classification number: C05C9/00 ,  C05B11/06 ,  Y10S206/807

    Abstract: The present invention relates to the reaction of phosphate rock with nitric acid and urea to produce nitrogen-phosphorus containing slurries, which slurries may be granulated and dried to produce solid N-P fertilizer products with agronomically advantageous low pHs (1.1-4.0). Products with optimum physical and chemical properties were discovered by investigating the characteristics of each individual material as a function of the nitric acid acidulation ratio (mole ratio HNO.sub.3 :CaO) and the mole ratio urea:CaO present in each product. Acidulation ratios ranged from 1.2 to 2.1 while ratios urea:CaO ranged from 1.6 to 4.0. Selected products with optimum physicochemical properties are tabulated below:______________________________________ Acidulation Ratio Ratio Melting HNO.sub.3 :CaO, M/M Urea:CaO, M/M Grade Pt, .degree.C. ______________________________________ 1.2 2.2 23.8--11.7--0 137-139 1.4 2.4 25.0--11.0--0 136 1.6 2.8 25.9--9.9--0 133-137 1.8 3.0 26.4--9.2--0 134-135 2.0 3.3 27.2--8.7--0 130 2.1 3.2 36.6--8.8--0 125-130 ______________________________________ Acidulation P.sub.2 O.sub.5 Solubility, Critical Rela- Ratio % pH of 1% tive Humidity HNO.sub.3 :CaO, M/M Water Citrate solution at 25.degree. C., % ______________________________________ 1.2 69.2 82.1 2.5 59.3 1.4 81.8 90.0 2.4 60.9 1.6 88.9 91.9 2.3 60.1 1.8 96.7 98.9 2.1 59.9 2.1 99.0 100 2.1 60.0 2.1 100 100 2.1 59.5 ______________________________________ The products have excellent storage characteristics. The improved properties of these products result partially from the formation of a new compound, Ca(H.sub.2 PO.sub.4)(NO.sub.3).CO(NH.sub.2).sub.2, which was discovered during the course of the investigation that led to the instant invention.

    HIGH EFFICIENCY BIOCONVERSION SURFACE MATERIALS
    20.
    发明申请
    HIGH EFFICIENCY BIOCONVERSION SURFACE MATERIALS 审中-公开
    高效生物显微镜表面材料

    公开(公告)号：US20090035599A1

    公开(公告)日：2009-02-05

    申请号：US12058274

    申请日：2008-03-28

    Applicant: Yong K. Kim ,  Armand F. Lewis

    Inventor： Yong K. Kim ,  Armand F. Lewis

    IPC: B32B5/02 ,  B32B33/00

    CPC classification number: C02F3/103 ,  Y02W10/15 ,  Y10T428/12361 ,  Y10T428/1362 ,  Y10T428/23943 ,  Y10T428/23957 ,  Y10T442/50

    Abstract: Flocked textile materials are disclosed as a support media for bacteria that actively biochemically convert noxious chemical species. Flocked fibrous netting materials as bioconversion support media are favorable to biological growth and provide excellent liquid (e.g. wastewater) flow through its structure as well as accommodating aeration processes. The disclosed support materials can be geometrically designed and positioned in many ways including stacked sheets/plies, rolled sheets in single or multi-walled tubes, and continuous belts or webs that can be self-cleaning and configured to operate in an automated process control mode. The disclosed support media facilitate development of compact and durable biofilter structures at a low cost.

    Abstract translation: 公开了植绒纺织材料作为主动生物化学转化有害化学物质的细菌的支持介质。 作为生物转化支持介质的植物纤维网材料有利于生物生长，并且通过其结构提供优异的液体（例如废水）流动以及适应曝气过程。 所公开的支撑材料可以以多种方式进行几何设计和定位，包括堆叠的片/层，单层或多壁管中的卷材，以及可以自清洁并且被配置为以自动过程控制模式操作的连续带或网 。 所公开的支撑介质以低成本便于紧凑且耐用的生物过滤器结构的开发。

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