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    • 2. 发明申请
    • COLOR CHANGING DEVICE FOR MONITORING SHELF-LIFE OF PERISHABLE PRODUCTS
    • 用于监控可持续产品的生命周期的颜色变化设备
    • WO1992009870A1
    • 1992-06-11
    • PCT/US1990006859
    • 1990-11-21
    • J.P. LABORATORIESPATEL, Gordhanbhai
    • J.P. LABORATORIES
    • G01K03/04
    • G01K11/16G01K3/04
    • A color changing device for monitoring the time-temperature storage history, i.e. shelf-life, of perishable products. The device is constructed of an activator tape, containing an activator composition matrix, an indicating tape, containing an indicating composition matrix and an optional barrier matrix between the activator tape and the indicating tape. At least one matrix is a pressure sensitive adhesive. The activating composition, e.g. an organic acid such as citric acid, diffuses through the barrier and/or indicating matrix to continuously contact the indicating composition, e.g. an acid-based dye indicator such as 2,2',4,4',4'', -pentamethoxy triphenylmethanol, to produce a visually observable color change at the temperature being monitored. The color intensifies with time and temperature, as more activator composition diffuses into the indicating matrix. The matrices are water-impermeable and the device preferably possesses activation energy and rate constant values for the color change which are substantially the same as those for product decay. This allows accurate and continuously observable monitoring of the available shelf-life of the perishable product to which the device is adhered to.
    • 一种用于监测易腐产品的时间 - 温度存储历史,即保存期限的变色装置。 该装置由活化剂带构成,其包含活化剂组合物基质,指示带,其含有指示组合物基质和活化剂带与指示带之间的可选屏障基质。 至少一个基质是压敏粘合剂。 活化组合物,例如 有机酸如柠檬酸,扩散通过阻挡层和/或指示基质以连续接触指示组合物,例如, 酸性染料指示剂,例如2,2',4,4',4“, - 三甲氧基三苯基甲醇,以在被监测的温度下产生视觉可见的颜色变化。 随着时间和温度的增加,随着更多的活化剂组合物扩散到指示矩阵中,颜色变强。 该基质是不透水的,并且该装置优选地具有与颜色变化基本相同的活化能并且对颜色变化进行速率常数值。 这允许准确和连续地观察到对该装置所附着的易腐产品的可用货架期的监测。
    • 3. 发明申请
    • SELF-INDICATING RADIATION ALERT DOSIMETER
    • 自我指示辐射警报剂
    • WO2004077097A3
    • 2005-06-23
    • PCT/US2004005860
    • 2004-02-26
    • JP LAB INCPATEL GORDHANBHAI N
    • PATEL GORDHANBHAI N
    • G01T1/04G01T1/06
    • G01T1/06G01T1/04
    • Described as a self-indicating instant radiation dosimeter (1001) for monitoring high energy radiations, such as X-ray. The dosimeter contains a radiation sensitive, color changing, indicating composition (10), e.g., a diacetylene (R-C=C-C=C-R', where R and R' are substituents groups) or a radiochromic dye, a polymeric binder (20) and optionally a shelf life extender (50) or an activator (40). The radiation sensitive composition (10) changes color instantly when exposed to high energy radiation. The dose is estimated by comparing the color with a color reference chart or more accurately with a spectrophotometer or an optical densitometer. The radiation sensitive composition (10) is protected from low energy radiation such as UV light, by a layer of low energy absorbing materials, such as UV absorbers.
    • 描述为用于监测诸如X射线的高能量辐射的自我指示即时辐射剂量计(1001)。 剂量计包含辐射敏感的颜色变化的指示组合物(10),例如乙炔(RC = CC = C-R',其中R和R'是取代基)或放射性色素染料,聚合物粘合剂(20) 和任选的保质期延长剂(50)或活化剂(40)。 辐射敏感组合物(10)在暴露于高能量辐射时立即改变颜色。 通过使用分光光度计或光密度计将颜色与颜色参考图比较或更准确地估计剂量。 辐射敏感组合物(10)通过诸如UV吸收剂的低能量吸收材料层来保护免受诸如UV光的低能量辐射。
    • 4. 发明申请
    • A GENERAL PURPOSE, HIGH ACCURACY DOSIMETER READER
    • 一种通用目的,高精度DOSIMETER读码器
    • WO2007089799A3
    • 2007-09-13
    • PCT/US2007002574
    • 2007-01-30
    • JP LAB INCPATEL GORDHANBHAI N
    • PATEL GORDHANBHAI N
    • G01T1/04G01T1/06
    • G01T1/06G01T1/04
    • A general purpose high accuracy dosimeter reader (80) for determination of dose, based on comparison of a treated dosimeter (111) with a series of images of pre-treated dosimeter (114). A dosimeter undergoes noticeable changes, such as a color change upon treatment with certain materials, such as toxic gases and processes, such as ionizing radiation and sterilization is pre-treated. The dosimeter is imaged with an imaging device (115) and images of the dosimeter or the changes, are stored in an information storage device (118). In order to determine the dose, the treated dosimeter is imaged and the image is compared with the series of pre-treated images of the dosimeter. The closest match of the treated dosimeter with the pre-treated and pre-imaged dosimeter would indicate the dose.
    • 基于经处理的剂量计(111)与预处理的剂量计(114)的一系列图像的比较,用于确定剂量的通用高精度剂量计读取器(80)。 剂量计经历显着的变化,例如用某些材料处理后的颜色变化,例如有毒气体和过程,如电离辐射,并且灭菌是预处理的。 剂量计用成像装置(115)成像,并且剂量计的图像或变化存储在信息存储装置(118)中。 为了确定剂量,对经处理的剂量计进行成像,并将图像与剂量计的一系列预处理图像进行比较。 经处理的剂量计与预处理和预成像的剂量计的最接近的匹配将指示剂量。
    • 5. 发明申请
    • A GENERAL PURPOSE, HIGH ACCURACY DOSIMETER READER
    • 一般用途,高精度剂量计读数器
    • WO2007089799A2
    • 2007-08-09
    • PCT/US2007/002574
    • 2007-01-30
    • JP LABORATORIES, INC.PATEL, Gordhanbhai N.
    • PATEL, Gordhanbhai N.
    • G01T1/04G01T1/06
    • G01T1/06G01T1/04
    • A general purpose high accuracy dosimeter reader (80) for determination of dose, based on comparison of a treated dosimeter (111) with a series of images of pre-treated dosimeter (114). A dosimeter undergoes noticeable changes, such as a color change upon treatment with certain materials, such as toxic gases and processes, such as ionizing radiation and sterilization is pre-treated. The dosimeter is imaged with an imaging device (115) and images of the dosimeter or the changes, are stored in an information storage device (118). In order to determine the dose, the treated dosimeter is imaged and the image is compared with the series of pre-treated images of the dosimeter. The closest match of the treated dosimeter with the pre-treated and pre-imaged dosimeter would indicate the dose.
    • 基于处理的剂量计(111)与预处理剂量计(114)的一系列图像的比较来确定剂量的通用高精度剂量计读取器(80)。 剂量计经历明显的变化,例如用某些材料处理时的颜色变化,例如有毒气体和过程,例如电离辐射和灭菌是预处理的。 用成像装置(115)对剂量计进行成像,并将剂量计的图像或变化存储在信息存储装置(118)中。 为了确定剂量,将处理的剂量计成像,并将图像与剂量计的一系列预处理图像进行比较。 经处理的剂量计与预处理和预成像的剂量计最接近的匹配将指示剂量。
    • 6. 发明申请
    • THICK RADIATION SENSITIVE DEVICES
    • 厚辐射敏感器件
    • WO2004017095A2
    • 2004-02-26
    • PCT/US2003/025234
    • 2003-08-13
    • PATEL, Gordhanbhai, N.
    • PATEL, Gordhanbhai, N.
    • G01T1/00
    • G01T1/06C09K11/06Y10T428/25
    • Described is radiation sensitive imaging and dosimeter composition (20) containing a radiation sensitive material (21), e.g., a diacetylene (R-C = C-C = C-R', where R and R' are substituent groups) or a radiochromic dye, a polymeric binder (22) and optionally a solvent (23) and/or an activator (24). Radiation sensitive materials are incorporated into a moldable or castable material and are molded or casted into shaped-articles (100), such as coatings, films, fiber, plaques, rods and blocks. Upon exposure to high-energy radiations, radiation sentitive material develops color thereby producing a visible image. Because of the higher thickness, a significantly lower dose of radiation can be monitored and an image is produced in three dimensions. Materials, processes and usages for thick radiation sensitive devices are described. A thick block can be used for monitoring radiation dosages in the three dimensions.
    • 描述了包含辐射敏感材料(21)的辐射敏感成像和剂量计组合物(20),例如联乙炔(RC = CC = 其中R和R'是取代基)或放射性染料染料,聚合物粘合剂(22)和任选的溶剂(23)和/或活化剂(24)。 将辐射敏感材料掺入可模制或可浇铸材料中,并模制或铸造成成形制品(100),例如涂层,薄膜,纤维,板,棒和块。 在暴露于高能辐射时,辐射敏感材料产生颜色,从而产生可见图像。 由于厚度较厚,因此可以监测显着较低的辐射剂量,并且可以在三维中生成图像。 描述了用于厚辐射敏感装置的材料,工艺和用途。 厚块可用于监测三维辐射剂量。
    • 8. 发明申请
    • TIME-TEMPERATURE, UV EXPOSURE AND TEMPERATURE INDICATOR
    • 时间温度,紫外线接触和温度指示器
    • WO2007117273A3
    • 2007-12-06
    • PCT/US2006039457
    • 2006-10-06
    • PATEL GORDHANBHAI N
    • PATEL GORDHANBHAI N
    • G03C5/00G01T1/02
    • G01J1/50G01K3/04
    • Disclosed is a device for monitoring one or more of integral value of time and temperature, UV light exposure and a pre-determined temperature of an item. The device is useful for monitoring items or materials which are sensitive to time-temperature, UV light and/or a pre-determined temperature. Radiation sensitive devices such as self-indicating instant radiation alert dosimeters (SIRAD) can be accidentally, inadvertently or intentionally over exposed to time-temperature, UV light and a pre-determined higher temperature. Such over exposure can provide a false positive or false negative signal. A device based on polymerization of diacetylenes and melting of partially polymerized diacetylenes, both of which are associated with color changes, are proposed as false positive, false negative, and tamper indicator.
    • 公开了一种用于监测时间和温度的整体值,紫外线曝光和物品的预定温度中的一个或多个的装置。 该装置可用于监测对时间温度,紫外线和/或预定温度敏感的物品或材料。 诸如自我指示即时辐射警报剂量计(SIRAD)之类的辐射敏感设备可能会偶然地,无意地或有意地暴露于时间 - 温度,紫外线和预定的较高温度。 这种过度曝光可以提供假阳性或假阴性信号。 提出了基于二乙炔的聚合和部分聚合的二乙炔的熔融的装置,这两者都与颜色变化相关联,被假设为假阳性,假阴性和篡改指示剂。
    • 9. 发明申请
    • TIME-TEMPERATURE, UV EXPOSURE AND TEMPERATURE INDICATOR
    • 时间温度,紫外辐射和温度指示
    • WO2007117273A2
    • 2007-10-18
    • PCT/US2006/039457
    • 2006-10-06
    • PATEL, Gordhanbhai N.
    • PATEL, Gordhanbhai N.
    • G01N21/25
    • G01J1/50G01K3/04
    • Disclosed is a device for monitoring one or more of integral value of time and temperature, UV light exposure and a pre-determined temperature of an item. The device is useful for monitoring items or materials which are sensitive to time-temperature, UV light and/or a pre-determined temperature. Radiation sensitive devices such as self-indicating instant radiation alert dosimeters (SIRAD) can be accidentally, inadvertently or intentionally over exposed to time-temperature, UV light and a pre-determined higher temperature. Such over exposure can provide a false positive or false negative signal. A device based on polymerization of diacetylenes and melting of partially polymerized diacetylenes, both of which are associated with color changes, are proposed as false positive, false negative, and tamper indicator.
    • 公开了一种用于监测时间和温度的积分值,UV光暴露和物品的预定温度中的一个或多个的装置。 该设备可用于监测对时间温度,紫外线和/或预定温度敏感的物品或材料。 辐射敏感设备,例如自我指示的即时辐射警报剂量计(SIRAD),可能会偶然,无意或故意过度暴露于时间温度,紫外线和预定的较高温度。 这种过度暴露可以提供假阳性或假阴性信号。 基于二乙炔的聚合和部分聚合的二乙炔的熔融(均与颜色变化有关)的装置被提出为假阳性,假阴性和篡改指示剂。