公开(公告)号：US4262054A

公开(公告)日：1981-04-14

申请号：US63446

申请日：1979-08-03

申请人： Hiroshi Umezaki ,  Hideki Nishida ,  Hirozi Yamada ,  Yutaka Sugita ,  Katsuhiro Kaneko ,  Nagatugu Koiso ,  Masatake Takahashi, deceased

发明人： Hiroshi Umezaki ,  Hideki Nishida ,  Hirozi Yamada ,  Yutaka Sugita ,  Katsuhiro Kaneko ,  Nagatugu Koiso ,  Masatake Takahashi, deceased

IPC分类号： H01F41/34 ,  H01F10/00

CPC分类号： H01F41/34 ,  Y10S428/90 ,  Y10T428/265 ,  Y10T428/269 ,  Y10T428/31507 ,  Y10T428/31522 ,  Y10T428/31681 ,  Y10T428/31721 ,  Y10T428/31942

摘要： A magnetic bubble memory device is disclosed in which a hardened film made of a heat-resisting highly-polymerized organic resin and having a predetermined thickness is employed for an insulating film interposed between a conductor pattern and a soft magnetic material pattern. In a conventional magnetic bubble memory device in which the above-mentioned insulating film is made of SiO.sub.2, an abrupt step is produced in the soft magnetic material pattern due to the existence of the conductor pattern beneath a portion of the soft magnetic material pattern, and the margin of bias magnetic field is thereby lowered. According to the present invention, the step is reduced and smoothed, and thus the lowering of the margin can be prevented.

摘要翻译： 公开了一种磁性气泡存储装置，其中将介于导体图案和软磁材料图案之间的绝缘膜用于由耐热高分子量有机树脂制成并且具有预定厚度的硬化膜。 在上述绝缘膜由SiO 2制成的常规磁性气泡存储装置中，由于在软磁材料图案的一部分下方存在导体图案，在软磁材料图案中产生突然的台阶， 因此偏置磁场的余量被降低。 根据本发明，减少并平滑了台阶，能够防止边缘的下降。

公开(公告)号：US3954958A

公开(公告)日：1976-05-04

申请号：US529937

申请日：1974-12-05

申请人： Atsuro Matsui ,  Hidekimi Kadokura ,  Tadaaki Yako ,  Hiroshi Umezaki ,  Kazuo Iida

发明人： Atsuro Matsui ,  Hidekimi Kadokura ,  Tadaaki Yako ,  Hiroshi Umezaki ,  Kazuo Iida

IPC分类号： B01J21/04 ,  C01F7/36 ,  C01F7/02

CPC分类号： C01F7/36

摘要： Powdery alumina hydrate is produced from an alkylaluminum compound by hydrolysis of the alkylaluminum compound by water through the following steps; converting the alkylaluminum compound to an ether complex compound: partially hydrolyzing the ether complex compound in the presence of an non-reactive solvent at a temperature of not higher than about 150.degree.C with stirring so that no alumina hydrate is precipitated until at least 0.8 moles of water reacts with one mole of the alkylaluminum compound, thereby forming polyaluminoxane; completely hydrolyzing the resulting polyaluminoxane at a concentration of not more than about 3.0 grams-atoms as aluminum per liter of non-reactive solvent at a temperature of about 10.degree. to about 150.degree.C with stirring, so that one mole of the feed alkylaluminum compound may be ultimately hydrolyzed completely with 2 to 10 moles of water, thereby precipitating alumina hydrate; and then separating the resulting alumina hydrate from the non-reactive solvent. The alumina hydrate has a good forming ability and also an ability to provide formed shapes having a good mechanical strength.

摘要翻译： 粉状氧化铝水合物由烷基铝化合物通过以下步骤水解烷基铝化合物; 将烷基铝化合物转化为醚络合物：在非反应性溶剂的存在下，在不高于约150℃的温度搅拌下部分水解醚络合物，使得没有氧化铝水合物沉淀直到至少0.8摩尔 的水与1摩尔的烷基铝化合物反应，从而形成聚铝氧烷; 在约10℃至约150℃的温度下，在搅拌下，将不超过约3.0克原子浓度的所得聚铝氧烷完全水解，每升非反应性溶剂为铝，使得1摩尔的进料烷基铝化合物 最终可以用2-10摩尔水完全水解，从而沉淀出水合氧化铝; 然后将所得的氧化铝水合物与非反应性溶剂分离。 氧化铝水合物具有良好的成形能力，并且还具有提供具有良好机械强度的成形形状的能力。