1
Klaus Kleinsorgen, Uwe Kohler, Alexander Bouvier, Andreas Folzer: Process for the recovery of metals from used nickel/metal/rare earth hydride storage batteries. Varta Batterie Aktiengesellschaft, Schnader Harrison Segal & Lewis, August 29, 2000: US06110433 (24 worldwide citation)

The invention relates to a process for recovering metals from used nickel/hydride storage batteries, in which storage battery scrap has been mechanically comminuted and divided into at least a coarse fraction and a fine fraction capable of being treated separately from one another. The process compr ...


2

3
Klaus Kleinsorgen, Uwe Kohler, Alexander Bouvier, Andreas Folzer: Process for the recovery of metals from used nickel/metal hydride storage batteries. Varta Batterie Atkiengesellschaft, Weiser and Associates P C, January 12, 1999: US05858061 (8 worldwide citation)

In the recycling of used nickel/metal hydride storage batteries, the battery scrap is dissolved in sulphuric acid after mechanical separation of the coarse constituents by magnetic and air separation. A solvent extraction is performed with the digestion solution, from which the rare earths (from the ...


4
Frank Lichtenberg, Klaus Kleinsorgen, Gunter Hofmann: Ni/metal hydride accumulator. Varta Batterie Aktiengesellschaft, Weiser & Associates, March 19, 1996: US05500309 (7 worldwide citation)

The positive electrode of a Ni/metal hydride accumulator is formed from a mass mixture of Ni(OH).sub.2 and an oxidation-resistant graphite. The stable graphite is notable for a high degree of crystallinity and a low ash content. In conventional Ni/metal hydride accumulators, cobalt compounds play an ...


5
Gerhard Simon, Klaus Kleinsorgen, Uwe Kohler: Gas-tight, sealed alkaline secondary cell. Varta Batterie Aktiengesellschaft, Weiser & Stapler, June 16, 1992: US05122426 (2 worldwide citation)

An auxiliary electrode for improving the consumption of oxygen in a gas-tight, sealed alkaline secondary cell is comprised of a synthetic nonwoven fabric and a film rolled onto the fabric. The film is a PTFE-bound activated carbon, and the side of the nonwoven fabric receiving the film is first impr ...


6
Klaus Kleinsorgen, Erich Munch: Metering of paste onto a carrier tape. Varta Batterie Aktiengesellschaft, Weiser & Stapler, October 4, 1983: US04407338

In metering viscous paste from a paste pot onto a carrier tape using a scraper, uniform coating thickness is obtained by causing the scraper to oscillate relative to the paste in a plane parallel to the carrier tape, with a speed which equals at least the tear velocity between scraper and paste. The ...


7

8

9
Frank Lichtenberg, Klaus Kleinsorgen, Guenter Hofmann: Ni/metal hydride secondary cell. Varta Batterie Aktiengesellschaft, LUO HONG WU DAJIAN, August 23, 1995: CN94119351

Whereas conventional Ni/metal hydride button cells whose positive compressed-powder electrodes are produced from a mixture of Ni(OH)2, Ni powder and oxide compounds of cobalt suffer a massive irreversible capacity drop (curve 1) through an intensified high-temperature storage test at 65 DEG C, inser ...


10
Frank Lichtenberg, Klaus Kleinsorgen, Guenter Hofmann: Electric accumulator. Varta Batterie Aktiengesellschaft, TIAN MINGSHENG WEI JINXI, August 23, 1995: CN94119353

In contrast to conventional Ni/metal hydride accumulators, in which cobalt compounds are essentially involved in the construction of a conductor skeleton within their positive nickel hydroxide electrodes, but which suffer a massive irreversible capacity drop (Curve 1) as a result of reductive breakd ...