Gas sensor with pH-sensitive FET transducer
    4.
    发明授权
    Gas sensor with pH-sensitive FET transducer 失效
    具有pH敏感型FET传感器的气体传感器

    公开(公告)号:US4409980A

    公开(公告)日:1983-10-18

    申请号:US293304

    申请日:1981-08-17

    摘要: A gas sensor which includes a reference electrode deposited on the surface of a pH-sensitive transducer having a gate-insulated field-effect transistor (FET) structure and adjacent a gate region of the FET, the transducer and reference electrode being housed in a flexible tube so that the gate region of the FET is located in an opening provided at the front end of or on the side wall of the tube. Lead wires connected to the FET and to the reference electrode extend along the tube. Between the inner wall of the tube and lead-wire FET bonding part is placed electrical insulation resin filling to stop the tube. A hydrophilic polymer layer containing electrolyte is provided which at least extends over both the FET gate region and a part of the reference electrode. A gas permeable membrane is laid over the polymer layer.

    摘要翻译: 一种气体传感器,包括沉积在具有栅极绝缘场效应晶体管(FET)结构并且邻近FET的栅极区域的pH敏感传感器的表面上的参考电极,换能器和参考电极被容纳在柔性 管,使得FET的栅极区域位于设置在管的侧壁的前端或其侧壁上的开口中。 连接到FET和参考电极的引线沿管延伸。 在管内壁和引线FET接合部分之间放置电绝缘树脂填充以停止管。 提供了含有电解质的亲水性聚合物层,其至少在FET栅极区域和参考电极的一部分上延伸。 将透气膜铺设在聚合物层上。

    Reference electrode of insulated gate field effect transistor
    6.
    发明授权
    Reference electrode of insulated gate field effect transistor 失效
    绝缘栅场效应晶体管参考电极

    公开(公告)号:US4269682A

    公开(公告)日:1981-05-26

    申请号:US968418

    申请日:1978-12-11

    CPC分类号: G01N27/414

    摘要: A reference electrode of an insulated gate field effect transistor having the surface of the gate region thereof coated with a hydrophobic organic polymer membrane. Since this reference electrode is much smaller in size than conventional reference electrodes, an integrated measurement system can easily be constructed by using this reference electrode. This measurement system is especially effective for measuring various ions in the living body.

    摘要翻译: 绝缘栅场效应晶体管的参考电极,其栅极区域的表面涂覆有疏水性有机聚合物膜。 由于该参考电极的尺寸比常规参考电极小得多,因此通过使用该参考电极可以容易地构建集成测量系统。 该测量系统对于测量活体中的各种离子特别有效。

    Method for filling tooth cavities employing a polymerizable urethane
cement composition
    8.
    发明授权
    Method for filling tooth cavities employing a polymerizable urethane cement composition 失效
    使用可聚合氨基甲酸酯水泥组合物填充牙齿腔的方法

    公开(公告)号:US4386912A

    公开(公告)日:1983-06-07

    申请号:US372207

    申请日:1982-04-26

    摘要: A cement composition which comprises a filler, a binder to be used in admixture with the filler, and a curing agent for polymerizing the binder, which is characterized by that the binder comprises, based on the total weight of the binder, 20-100% by weight of (A) a free-radical polymerizable monomer of the following formula: ##STR1## wherein R is a hydrogen atom or a methyl group and X is an organic residue having 1-48 carbon atoms, and 0-80% by weight of (B) a mono-, di- or tri-functional free-radical polymerizable monomer which is copolymerizable with the above monomer (A) is disclosed. By using the above binder, the filler is firmly bonded with each other and gives a cured product having high compressive strength and abrasion resistance. The cement composition is especially useful as dental restorative materials.

    摘要翻译: 一种水泥组合物,其包含填料,与填料混合使用的粘合剂和用于聚合粘合剂的固化剂,其特征在于粘合剂基于粘合剂的总重量为20-100重量% (A)下式的自由基聚合性单体:其中R为氢原子或甲基,X为碳原子数为1〜48的有机残基,0〜80重量% 公开了(B)可与上述单体(A)共聚的单,二或三官能的可自由基聚合的单体。 通过使用上述粘合剂,填料彼此牢固地结合,得到具有高抗压强度和耐磨性的固化产物。 该水泥组合物特别用作牙科修复材料。

    Dental material
    10.
    发明授权
    Dental material 失效
    牙科材料

    公开(公告)号:US4302381A

    公开(公告)日:1981-11-24

    申请号:US67454

    申请日:1979-08-17

    CPC分类号: A61K6/083

    摘要: The present invention provides a dental material comprising a polymerizable methacrylate monomer mixture and a curing agent, said polymerizable methacrylate monomer mixture containing a compound represented by the formula ##STR1## wherein R is H or methyl and n is integer of 1-4, in an amount of 5-50% by weight based on the whole polymerizable monomer mixture. Said dental material is useful as a filling material, a dental adhesive primer, and a pit and fissure sealant.

    摘要翻译: 本发明提供一种包含可聚合的甲基丙烯酸酯单体混合物和固化剂的牙科材料,所述可聚合的甲基丙烯酸酯单体混合物含有由下式表示的化合物:其中R为H或甲基,n为整数1 -4,相对于整个可聚合单体混合物,其含量为5-50重量%。 所述牙科材料可用作填充材料,牙科粘合剂底漆以及凹坑和裂缝密封剂。