U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 6205950

Pet Toilet-Like Water Disk and Food Storage

One pet-friendly inventor patented "a device for watering pets, e.g., a dog or cat." The device, he helpfully noted, "has the general shape of a toilet."

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 204/229.1 - Reference electrode as or with auxiliary electrode


Subclass of Class 204 - Chemistry: electrical and wave energy
Definition: Apparatus having a reference electrode as or in addition
No. of patents: 20
Last issue date: 10/21/2008


NumberTitleIssue Date
7438853Photoelectrocatalytic method and photoelectrochemical detector for electrochemical analysis
A photoelectrocatalytic method for detecting current that illuminates a photoelectrochemical electrode to generate a photocurrent and to magnify the current. Thereby, accuracy of the detection is increased. A photoelectrochemical detector used in the method has a ba...
10/21/2008
7393504Flow injection electrochemical detecting device
A flow injection electrochemical detecting device has a base (10), a cover pivotally mounted on the base (10), and a locking device attached between the base (10) and the cover (20). The base (10) has a recess (12) defined i...
07/01/2008
7214934Radio frequency power generator
A RF power generator for exciting inductively coupled plasma for spectrometry includes an induction coil for exciting the plasma as part of its load circuit. The load circuit also comprises a capacitor connected in parallel with the induction coil. The RF power gene...
05/08/2007
7211175Method and apparatus for potential controlled electroplating of fine patterns on semiconductor wafers
Controlled-potential electroplating provides an effective method of electroplating metals onto the surfaces of high aspect ratio recessed features of integrated circuit devices. Methods are provided to mitigate corrosion of a metal seed layer on recessed features du...
05/01/2007
7182845Electrochemical sensing circuit having high dynamic range
An electronic sensing circuit for an electrochemical gas sensor cell providing high dynamic range is described. The electronic circuit utilizes an amplifier with a resistive feedback element to provide high sensitivity linear sensing of low detected gas concentratio...
02/27/2007
7033466Electrochemical stripping using single loop control
The present invention relates to a control loop to be used in a system for stripping a coating from a part. The control loop comprises an electrometer for measuring a potential between the part and a reference electrode and generating a voltage output signal, an ope...
04/25/2006
6830673Anode assembly and method of reducing sludge formation during electroplating
A higher applied potential may be provided to a consumable anode to reduce sludge formation during electroplating. For example, a higher applied potential may be provided to a consumable anode by decreasing the exposed surface area of the anode to the electrolyte so...
12/14/2004
6413389Method for recovering metal from etch by-products
A method and assembly for recovering a metal from by-products produced from etching a metal (e.g., platinum, iridium, aluminum, etc.) in a plasma processing chamber. The method includes recovering from the plasma processing chamber a deposit of the by-pro...
07/02/2002
6074536Electroyltic cell and method for removing silver from silver-containing aqueous liquids
The cell comprises a housing (10) including a base (15), an anode (20) positioned within the housing (10), a cathode (30) surrounding the anode (20) in the housing (10), an inlet opening (18), and an outlet opening (19). The outlet opening (19) through th...
06/13/2000
6071399Electrolytic cell
An electrolytic cell comprises a housing (12), means (21) defining a liquid level (25) in said housing (12), a first contact surface (32) positioned above said liquid level (25) for making contact with a removable electrode (20) when positioned in said ho...
06/06/2000
5096550Method and apparatus for spatially uniform electropolishing and electrolytic etching
In an electropolishing or electrolytic etching apparatus the anode is separated from the cathode to prevent bubble transport to the anode and to produce a uniform current distribution at the anode by means of a solid nonconducting anode-cathode barrier. T...
03/17/1992
5062932Procedure and means for separating plastic particles electrically from solutions, in particular from cellulose and paper fibre solutions
Plastic particles are separated from liquid mediums having the same distributed therethrough, in particular cellulose and paper fiber-containing mediums by electrolytic separation. The liquid medium is introduced into a container provided with an anode, a...
11/05/1991
4969986Controlled potential electrolysis apparatus
Electrochemical regeneration in an electrochemical cell of spent scrubbing solutions containing polyvalent metal chelates is accomplished without substantial degradation of the chelate by controlling the anolyte pH and maintaining the anode potential of t...
11/13/1990
4642172Controlled-potential bias circuit for electrochemical cells
A bias circuit (13) for an electrochemical fuel cell (15) serving for example as a carbon monoxide or hydrogen sulfide detector, including an operational amplifier tied to the anode and reference terminals (21,23) of the fuel cell (15), and a zener diode ...
02/10/1987
4424105Gas generator with regulated current source
An improved apparatus for gas generators producing oxygen and hydrogen or oxyhydrogen gas, the apparatus comprising a solid state current limiting circuit in combination with an assembly of electrolytic cells. The current-limiting circuit replaces the var...
01/03/1984
4383900Apparatus and method for measuring the IR drop free cathodic protection potential created by a rectifier and controlling rectifier operation to achieve a desired level thereof
An electronic circuit for measuring the IR drop free potential of a cathodically protected structure includes a shunting transistor which is periodically pulsed on to shunt or electrically connect the output lines of a rectifier to force the voltage and c...
05/17/1983
4287044Silver recovery apparatus
A silver recovery apparatus for recovering silver from a solution containing silver ions, such as a photographic fixer bath, including an electrolytic recovery cell, a probe electrode located in a liquid conduit connecting a source of the solution to the ...
09/01/1981
4255242Reference electrode IR drop corrector for cathodic and anodic protection systems
In making measurements of the potential of a structure immersed in an electrolyte, which structure is being protected from corrosion by a cathodic or anodic protection system, serious errors are often introduced by the IR drop component induced by current...
03/10/1981
4227988Potentiostat for use with electrochemical cells
An improved potentiostat for use with electrochemical cells provides dynamic protection of both the electrochemical cell elements and the sensitive potentiostat components from any significant voltage or current overload. A comparator compares the potenti...
10/14/1980
4071429Electrolytic flow-cell apparatus and process for effecting sequential electrochemical reaction
This invention relates to an electrolytic flow-cell apparatus and a process for effecting sequential electrochemical reactions of redoxidative compounds at a porous working electrode. The porous working electrode has a first face and a second and opposite...
01/31/1978
 
Sign InRegister
Username  
Password   
forgot password?