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81. 发明授权

US06242793B1 Method and a circuit for improving the effectiveness of ESD protection in circuit structures formed in a semiconductor 有权
公开(公告)号：US06242793B1
公开(公告)日：2001-06-05
申请号：US09231129
申请日：1998-12-30
申请人： Paolo Colombo , Emilio Camerlenghi
发明人： Paolo Colombo , Emilio Camerlenghi
IPC分类号： H01L2973
CPC分类号： H01L29/735 , H01L27/0259
摘要： A method and a related circuit structure are described for improving the effectiveness of ESD protection in circuit structures realized in a semiconductor substrate overlaid with an epitaxial layer and including at least one ESD protection lateral bipolar transistor realized in the surface of the epitaxial layer. The method consists of forming under the transistor an isolating well that isolates the transistor from the substrate. Advantageously, the transistor can be fully isolated from the substrate by first and second N wells which extend from the surface of the epitaxial layer down to and in contact with the buried well.

82. 发明授权

US5312793A Stable aqueous suspensions of zeolite which can be easily pumped 失效
标题翻译：易于泵送的稳定的沸石水性悬浮液
公开(公告)号：US5312793A
公开(公告)日：1994-05-17
申请号：US905731
申请日：1992-06-29
申请人： Paolo Colombo , Pier D. Mattioli , Luigi Valtorta , Pierino Radici
发明人： Paolo Colombo , Pier D. Mattioli , Luigi Valtorta , Pierino Radici
IPC分类号： C01B39/14 , C11D1/72 , C11D1/825 , C11D3/12 , B01J20/18 , B01J20/28 , C11D3/08
CPC分类号： C11D3/1286 , C11D1/8255 , C11D1/72
摘要： Stable aqueous suspensions of zeolite 4A which can be easily pumped, containing from 0.5 to 65% of zeolite and from 0.05 to 6 g (per 100 g of zeolite) of a suspending agent, composed of mixtures of ethoxylated alkanols, said mixtures being obtained by ethoxylating: a) biodegradable branched alkanols, having from 10 to 18 carbon atoms and having a single branching in position 2, said mixtures containing at least 2 alkanols having a different number of C atoms; or b) mixtures containing 40-100% of branched alkanols as in a) and 60-0% of linear alkanols having from 10 to 18 C atoms.
摘要翻译：沸石4A的稳定含水悬浮液，其易于泵送，其含有0.5至65％的沸石和0.05至6g（每100g沸石）悬浮剂，其由乙氧基化链烷醇的混合物组成，所述混合物由乙氧基化：a）具有10至18个碳原子并且在位置2具有单个支链的可生物降解的支链烷醇，所述混合物含有至少2个具有不同数目C原子的链烷醇; 或b）含有40-100％如a）中的支链链烷醇和60-0％的具有10至18个C原子的线性链烷醇的混合物。

83. 发明授权

US4203735A Process for purifying gaseous formaldehyde 失效
标题翻译：甲醛净化方法
公开(公告)号：US4203735A
公开(公告)日：1980-05-20
申请号：US895553
申请日：1978-04-12
申请人： Paolo Colombo , Pierino Radici
发明人： Paolo Colombo , Pierino Radici
IPC分类号： C07C47/058 , C07C45/00 , C07C45/78 , C07C47/04 , C07C67/00 , B01D53/12
CPC分类号： C07C45/79
摘要： Raw gaseous formaldehyde is purified by passing it through a first series of superimposed fluidized beds of solid adsorbent, maintained at 80.degree.-140.degree. C., while continuously circulating solid adsorbent from each bed to the underlying bed and discharging from the lowermost bed the spent adsorbent, delivering the latter to the uppermost bed of a second series of superimposed fluidized beds of solid adsorbent, passing through the latter a stream of inert gas to strip the adsorbed formaldehyde at 130.degree.-150.degree. C., while continuously circulating said spent adsorbent from each bed to the underlying bed and discharging from the lowermost bed the adsorbent thus treated, delivering the latter to the uppermost bed of a third series of fluidized beds of solid adsorbent, and passing through the latter a stream of inert gas to regenerate the adsorbent at 145.degree.-250.degree. C., while continuously circulating the adsorbent from each bed to the underlying bed, discharging the regenerated adsorbent from the lowermost bed and recycling said regenerated adsorbent to the uppermost bed of the first series.
摘要翻译：通过将原始气态甲醛通过固体吸附剂的第一系列叠加的流化床，保持在80-140℃，同时将固体吸附剂从每个床连续循环到下面的床并从最下面的床排出，从而净化吸附剂，将其输送到固体吸附剂的第二系列叠加流化床的最上层，通过惰性气体流在130-150℃下分离吸附的甲醛，同时连续循环所述废吸附剂从每个床到下面的床，并从最下层的床排出由此处理的吸附剂，将其输送到固体吸附剂的第三系列流化床的最上层，并通过惰性气体流再生吸附剂在145°-250℃下，同时将吸附剂从每个床连续循环到下层床，排出再生吸附剂 t并将所述再生吸附剂再循环到第一系列的最上层。

84. 发明授权

US4043873A Plural stage recovery of trioxane in a process having a molecular distillation step 失效
标题翻译：在具有分子蒸馏步骤的方法中，三恶烷的多级回收
公开(公告)号：US4043873A
公开(公告)日：1977-08-23
申请号：US677952
申请日：1976-04-19
申请人： Jacob Ackermann , Pierino Radici , Umberto Santini , Paolo Colombo
发明人： Jacob Ackermann , Pierino Radici , Umberto Santini , Paolo Colombo
IPC分类号： C07D323/06 , B01D3/12
CPC分类号： C07D323/06
摘要： Process for the separation of trioxane from aqueous solutions containing it together with formaldehyde, which comprises subjecting the said solutions to evaporation at temperatures of 100.degree. C or lower, at pressures lower than atmospheric, and with residence times of less than 1 minute under the evaporation conditions, with vaporization of a quantity of from about 5 to about 15% by weight of the solution introduced, and recovering the trioxane from the products evaporated in this way.
摘要翻译：将含有它的水溶液与甲醛一起分离三恶烷的方法，其中包括使所述溶液在低于大气压的压力下在100℃或更低的温度下蒸发，并且在蒸发下的停留时间小于1分钟条件，蒸发量为所引入溶液的约5至约15重量％，并从以这种方式蒸发的产物中回收三恶烷。

85. 发明授权

US3979480A Process for the polymerization of formaldehyde 失效
标题翻译：甲醛聚合方法
公开(公告)号：US3979480A
公开(公告)日：1976-09-07
申请号：US533268
申请日：1974-12-16
申请人： Pierino Radici , Daniele Colombo , Paolo Colombo
发明人： Pierino Radici , Daniele Colombo , Paolo Colombo
IPC分类号： C08G69/00 , C08G2/00 , C08G2/06 , C08G2/08 , C08G69/44 , C08L77/02
CPC分类号： C08G2/06 , C08G2/08
摘要： Polyformaldehyde is prepared by feeding anhydrous formaldehyde to a reaction medium containing a liquid organic diluent non-solvent for the polyformaldehyde and non-reactive towards the other constituents of the reaction medium, and containing in a dispersed form a copolymer A-B, whereinA is a polylactonic block of recurring units ##EQU1## B is a polylactamic block of recurring units ##EQU2## wherein PM.sub.1 and PM.sub.2 are linear polymethylene chains having from 2 to 13 and 3 to 13 carbon atoms, respectively.
摘要翻译：聚甲醛通过将无水甲醛加入到含有聚甲醛的液体有机稀释剂非溶剂并且对反应介质的其它组分是非反应性的反应介质中，并以分散形式包含共聚物AB制备，其中A是聚乳酸重复单元块--C-（PM1）-O-- PARALLEL OB是重复单元-CC（PM2）-N-- PARALLEL | OH的多交酯嵌段，其中PM1和PM2是具有2至 13和3至13个碳原子。

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