IMPLANTE MEDICO BIODEGRADABLE IN VIVO.

    公开(公告)号:MX2010003813A

    公开(公告)日:2010-05-17

    申请号:MX2010003813

    申请日:2009-02-18

    Abstract: Se revelan implantes m?dicos biodegradables in vivo que contienen en parte materiales met?licos con grano al menos parcialmente fino que son fuertes, duros, r?gidos, y ligeros. Los implantes biodegradables in vivo se usan en diferentes aplicaciones de endopr?tesis, para la fijaci?n de fracturas, suturas y los similares. Los implantes m?dicos biodegradables in vivo permiten la reducci?n del tama?o y el peso del implante y por consiguiente origina la reducci?n de la liberaci?n de los productos de degradaci?n del implante en el cuerpo.

    76.
    发明专利
    未知

    公开(公告)号:BR0117183A

    公开(公告)日:2004-11-03

    申请号:BR0117183

    申请日:2001-11-26

    Abstract: Recrystallized lead and lead alloy positive current collectors and connectors such as straps and lugs for use e.g. in lead acid batteries and electrowinning anodes, having an increased percentage of special grain boundaries in at least part of the microstructure, which have been provided by a process comprising of (i) cold or hot rolling or cold or hot extrusion or (ii) steps of deforming the lead or lead alloy, and subsequently annealing the lead or lead alloy. Either a single cycle of working and annealing can be provided, or a plurality of such cycles can be provided. The amount of deformation, the recrystallization time and temperature, and the number of repetitions of such steps are selected to ensure that a substantial increase in the population of special grain boundaries is provided in the microstructure, to improve resistance to creep, intergranular corrosion and intergranular cracking of the current collectors and connectors during battery service, and result in extended battery life and the opportunity to reduce the size and weight of the battery.

    77.
    发明专利
    未知

    公开(公告)号:DE60009126D1

    公开(公告)日:2004-04-22

    申请号:DE60009126

    申请日:2000-06-28

    Inventor: PALUMBO GINO

    Abstract: Recrystallized lead and lead alloy positive electrodes for lead acid batteries having an increased percentage of special grain boundaries in the microstructure, preferably to at least 50%, which have been provided by a process comprising steps of working or straining the lead or lead alloy, and subsequently annealing the lead or lead alloy. Either a single cycle of working and annealing can be provided, or a plurality of such cycles can be provided. The amount of cold work or strain, the recrystallization time and temperature, and the number of repetitions of such steps are selected to ensure that a substantial increase in the population of special grain boundaries is provided in the microstructure, to improve resistance to creep, intergranular corrosion and intergranular cracking of the electrodes during battery service, and result in extended battery life and the opportunity to reduce the size and weight of the battery.

    78.
    发明专利
    未知

    公开(公告)号:AT262218T

    公开(公告)日:2004-04-15

    申请号:AT00941855

    申请日:2000-06-28

    Inventor: PALUMBO GINO

    Abstract: Recrystallized lead and lead alloy positive electrodes for lead acid batteries having an increased percentage of special grain boundaries in the microstructure, preferably to at least 50%, which have been provided by a process comprising steps of working or straining the lead or lead alloy, and subsequently annealing the lead or lead alloy. Either a single cycle of working and annealing can be provided, or a plurality of such cycles can be provided. The amount of cold work or strain, the recrystallization time and temperature, and the number of repetitions of such steps are selected to ensure that a substantial increase in the population of special grain boundaries is provided in the microstructure, to improve resistance to creep, intergranular corrosion and intergranular cracking of the electrodes during battery service, and result in extended battery life and the opportunity to reduce the size and weight of the battery.

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