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    • 2. 发明授权
    • Multi-arm cationic star-polymers
    • 多臂阳离子星形聚合物
    • US5395885A
    • 1995-03-07
    • US169434
    • 1993-12-17
    • Joseph P. KennedyTimea M. MarsalkoIstvan J. Majoros
    • Joseph P. KennedyTimea M. MarsalkoIstvan J. Majoros
    • C08F293/00C08F297/00C08G81/00
    • C08F297/00
    • The first synthesis of a multi-arm radial-star polyisobutylene is described. The synthesis occurred by the addition of excess divinylbenzene (DVB) linking reagent to a living polyisobutylene (PIB.sup..sym.), charge, i.e., by the "arm first" method under specific conditions. The radial structure of the star-PIB was proven by determining the molecular weight of a sample by light scattering, then selectively destroying the aromatic polydivinylbenzene core, and finally determining the molecular weight of the surviving aliphatic PIB arms. The synthesis strategy, kinetic observations during synthesis, and procedures leading to a representative star-PIB are described. This product whose M.sub.w =1,134,400 g/mole with M.sub.w /M.sub.n =2.83, contained .about.90.3 mole % (.about.78 wt. %) PIB arms and .about.9.7 mole % (.about.22 wt. %) aromatic core; thus the number of PIB arms emanating from the core was N.sub.n, arm =56 or N.sub.w, arm (weight average number of arms)=110.
    • 描述了多臂径向星形聚异丁烯的第一次合成。 通过在特定条件下通过加入过量的二乙烯基苯(DVB)连接试剂与活性聚异丁烯(PIB(+))进行合成,即通过“臂第一”方法进行加料。 通过用光散射确定样品的分子量,然后选择性地破坏芳族聚二乙烯基苯核心,最后确定存活的脂族PIB臂的分子量,证明了星形PIB的径向结构。 描述了合成策略,合成过程中的动力学观察以及导致代表性的星形-PIB的程序。 该产品的&upbar&Mw = 1,134,400克/摩尔<上升&Mw /&upbar&Mn = 2.83,含有差异90.3摩尔%(差异78重量%)PIB臂和差异9.7摩尔%(差异22重量%)芳香核; 因此从核心发出的PIB武器的数量是&upbar&Nn,arm = 56或&upbar&Nw,手臂(重量平均臂数)= 110。
    • 9. 发明授权
    • System and method for single sensor geolocation
    • 单传感器地理位置的系统和方法
    • US07974633B2
    • 2011-07-05
    • US11505950
    • 2006-08-18
    • Joseph P. KennedyJohn P. Carlson
    • Joseph P. KennedyJohn P. Carlson
    • H04W24/00
    • H04W64/00G01S5/0252G01S5/14
    • A system and method for determining a position of a wireless mobile device. The method comprising the steps of providing one base station in communication with the mobile device, providing a sensor spaced apart a known distance from the base station, and determining the range between the mobile device and the base station. The time of arrival of a signal transmitted from the mobile device is measured at the sensor and a set of coordinates is calculated for the mobile device relative to the sensor as a function of the known distance from the sensor to the base station, the range between the mobile device and the base station, an estimate of base station transmission timing relative to a time source, and the time of arrival. One of the set of coordinates may then be chosen to thereby determine a position of the mobile device relative to the sensor.
    • 一种用于确定无线移动设备的位置的系统和方法。 该方法包括以下步骤:提供与移动设备通信的一个基站,提供与基站间隔开已知距离的传感器,以及确定移动设备与基站之间的距离。 在传感器处测量从移动设备发送的信号的到达时间,并且针对移动设备相对于传感器计算一组坐标作为从传感器到基站的已知距离的函数, 移动设备和基站,相对于时间源的基站传输定时的估计以及到达时间。 然后可以选择坐标系中的一个,从而确定移动设备相对于传感器的位置。