公开(公告)号：WO1995015808A1

公开(公告)日：1995-06-15

申请号：PCT/GB1994002709

申请日：1994-12-12

Applicant: NORTH WEST WATER GROUP PLC ,  COLQUHOUN, Howard, Matthew ,  SIMPSON, Alan, Frederick ,  ROGERS, Victor ,  ROBERTS, Karen

Inventor： NORTH WEST WATER GROUP PLC

IPC: B01D71/52

CPC classification number: C08J9/28 ,  B01D67/0016 ,  B01D69/02 ,  B01D71/52 ,  B01D2323/12 ,  B01D2325/022 ,  B01D2325/20 ,  B01D2325/34 ,  C08J2371/00

Abstract: A method of producing a porous membrane by gelation in a non-solvent medium of a solution of an aromatic ether ketone polymer in a strong acid which is substantially non-sulphonating to the polymer is characterised by the step of including a dissolved polymer in the gelation medium. The method allows the fabrication of membranes with pore sizes in the nanofiltration and low-ultrafiltration range having sufficient permeability for industrial and commercial application.

Abstract translation: 在芳族醚酮聚合物在基本上不磺化的强酸中的溶剂的非溶剂介质中通过凝胶化生产多孔膜的方法，其特征在于在凝胶化中包括溶解的聚合物 中。 该方法允许制造具有纳米过滤孔径和低超滤范围的膜，其具有足够的工业和商业应用的渗透性。

公开(公告)号：WO1997038343A1

公开(公告)日：1997-10-16

申请号：PCT/EP1997000105

申请日：1997-01-10

Applicant: DIEHL, Hermann, O., Th. ,  MORRIS, Michael, Alan ,  BARKAN, Eric, Franklin ,  EDWARDS, Simon, John ,  KRIS, Dimitrios, Jack ,  LEE, Anthony, Alan ,  MATTISON-SHUPNICK, Mark ,  PERROTT, Colin, Maurice ,  ROBERTS, Karen, Lee ,  SKLAR, David, Howard

Inventor： DIEHL, Hermann, O., Th.

IPC: G02C07/02

CPC classification number: G02C7/063 ,  G02C7/027 ,  G02C7/061 ,  G02C7/066 ,  G02C2202/08

Abstract: A series of progressive opthalmatic lens elements, each lens element including a lens surface having an upper viewing zone having a surface power to achieve a refracting power corresponding to distance vision; a lower viewing zone having a greater surface power than the upper viewing zone to achieve a refracting power corresponding to near vision; a corridor of relatively low surface astigmatism connecting the upper and lower zones, said corridor having a surface power varying from that of the upper viewing zone to that of the lower viewing zone; the progressive ophthalmic lens series including a first set of lens elements having a base curve(s) suitable for use in providing a range of distance prescriptions for a first category of patient; and a second set of lens elements having a base curve(s) suitable for use in providing a range of distance prescriptions for a second category of patient; each lens element within a set differing in prescribed addition power and including a progressive design, in at least one of the upper and lower viewing zones, depending upon the addition power of the lens element; the lens elements in the first set differing substantively in progressive design from the corresponding lens elements in the second set due to the differences in base curve(s).

Abstract translation: 一系列渐进式眼用透镜元件，每个透镜元件包括透镜表面，所述透镜表面具有具有表面光焦度的上观察区域，以实现对应于距离视觉的折射力; 下视区具有比上观察区更大的表面力，以实现对应于近视的折射力; 连接上部和下部区域的相对较低的表面散光走廊，所述走廊具有从上部观察区域到下部观察区域的表面功率变化的表面光焦度; 所述渐进式眼科镜片系列包括第一组透镜元件，所述第一组透镜元件具有适用于为第一类患者提供一定范围的距离处方的基本曲线; 以及第二组透镜元件，其具有适合用于为第二类患者提供一定范围的距离处方的基本曲线; 根据透镜元件的附加功率，在一组中不同于规定的附加力并且包括渐进式设计的每个透镜元件在上视图区域和下视野区域中的至少一个中; 由于基础曲线的差异，第一组中的透镜元件在逐渐设计中与第二组中的对应透镜元件实质上不同。