John D Harman

US Patent:

20060091009, May 4, 2006

Filed:

Nov 2, 2004

Appl. No.:

10/979507

Inventors:

John Harman - Placentia CA, US

International Classification:

G01N 27/26

US Classification:

204416000, 205775000

Abstract:

An ion selective electrode assembly () comprises an ion selective electrode () provided as a solid pellet of polycrystalline electrolyte material with inert conductive and polymeric binding agent additives. The ion selective electrode () includes a first face (), a second face (), and at least one sidewall (). An integral sealing surface () is electrolytically formed on the sidewall of the ion selective electrode (). The integral sealing surface () may also be formed on a portion of the second face () of the ion selective electrode (). The assembly () further comprises a housing () for receiving the ion selective electrode. An adhesive () is positioned between the integral sealing surface () and the housing (). The adhesive () bonds the ion selective electrode to the housing.

US Patent:

40986349, Jul 4, 1978

Filed:

Mar 24, 1977

Appl. No.:

5/780609

Inventors:

John N. Harman - Glendale CA

Assignee:

Drewry Photocolor Corporation - Burbank CA

International Classification:

B32B 3100
B31F 500

US Classification:

156302

Abstract:

Method and apparatus for assembling for reprinting a plurality of film strip portions into a continuous film strip by adhesively affixing the film strip portions to a film carrier comprising a paper tape to which has been joined an adhesive tape along one edge to form an adhesive stripe along that edge. The carrier cooperates with a film gate including an indexing edge for aligning the film strip portions for subsequent adhesive fixing to the edge of the carrier. Alternate embodiments for the film gate indexing structure for different size film are disclosed. The film carrier is marked with printing instructions for some or all of the individual negatives affixed thereto.

US Patent:

46559000, Apr 7, 1987

Filed:

Mar 10, 1986

Appl. No.:

6/837802

Inventors:

Radhakrishna M. Neti - Brea CA
John N. Harman - Placentia CA

Assignee:

Beckman Industrial Corporation - La Habra CA

International Classification:

G01N 2746
B05D 302

US Classification:

204415

Abstract:

An improved electrochemical cell is described which comprises at least one electrode having increased signal strength achieved by treating at least the working surface of the electrode with a coating of a polytetrafluoroethylene and a catalyst metal selected from the group consisting of platinum and the oxides thereof in an aqueous oligosaccharide solution. Following coating, the electrode is heated to a temperature below the sintering temperature of the polymer to thermally convert the oligosaccharide in the presence of the catalyst metal and drive off the conversion products. An electrode thus treated exhibits a substantially inproved signal strength as compared to an electrode of the same construction which has not been treated in accordance with the invention.

US Patent:

44850018, Nov 27, 1984

Filed:

Feb 21, 1984

Appl. No.:

6/582111

Inventors:

John N. Harman - Placentia CA
Radhakrishna M. Neti - Brea CA

Assignee:

Beckman Instruments, Inc. - Fullerton CA

International Classification:

G01N 2736

US Classification:

204408

Abstract:

A pH electrode which is capable of withstanding repeated exposures to sterilizing temperatures. An electrode body having a pH sensing member is at least partially filled with a bed of electrochemically inert particles. After an internal reference is inserted into the particle bed, the bed is injected with a quantity of electrolyte which is sufficient to establish continuity between the sensing member and the internal reference, but which is not sufficient to produce destructive internal pressures when the electrode is subjected to sterilizing temperatures. The electrode is completed by forming a seal between the electrode body and the internal reference.

US Patent:

44104090, Oct 18, 1983

Filed:

Dec 28, 1981

Appl. No.:

6/335019

Inventors:

John N. Harman - Placentia CA

Assignee:

Beckman Instruments, Inc. - Fullerton CA

International Classification:

G01N 2730
G01N 2754

US Classification:

204415

Abstract:

An improved electrode assembly for use in amperometric gas sensors. A portion of the interior of the electrode assembly that is adjacent to the electrode is filled with an electrochemically inert water-repellant fluid. Once the fluid is in place, a fluid barrier is inserted to cover the fluid and to serve as a foundation for the introduction of a sealing compound. A pressure relief structure, such as a gas bubble, may be provided within the fluid to relieve the pressures incident to the thermal expansion and contraction of the electrode assembly. Because of the water repellancy of the fluid, the electrolyte solution which surrounds the electrode assembly is prevented from migrating into the interior thereof and thereby initiating output current errors.

US Patent:

43280820, May 4, 1982

Filed:

Jun 26, 1980

Appl. No.:

6/163112

Inventors:

Radhakrishna M. Neti - Brea CA
John N. Harman - Placentia CA

Assignee:

Beckman Instruments, Inc. - Fullerton CA

International Classification:

G01N 2736

US Classification:

204195G

Abstract:

A solid state ion-sensitive measuring electrode is disclosed in which a filler solution comprising sodium silicate is provided between an outer glass membrane of the electrode and an internal metallic wire which serves as a conductor from the electrode to a meter. The filler solution is inserted into the electrode as a liquid, and is subsequently dehydrated to provide a permanent solid-state matrix which is electrically conducting between the outer glass membrane and the internal wire.

US Patent:

43794025, Apr 12, 1983

Filed:

Jan 22, 1981

Appl. No.:

6/227332

Inventors:

John N. Harman - Placentia CA

Assignee:

Beckman Instruments, Inc. - Fullerton CA

International Classification:

G01N 3100

US Classification:

73 23

Abstract:

An apparatus for compensating for changes in the mass flow rate of a sample gas stream in gas analysis instruments having outputs that are calibrated in terms of the concentration of a component of the sample stream. In instruments in which a pressure regulated sample gas stream is applied to a detector assembly through a flow restrictor such as a sample capillary, a gas flow sensor is connected in series with the flow restrictor to develop a correction signal that varies in accordance with the mass flow rate of the sample stream. A correcting circuit combines the correction signal from the flow sensor with the output signal from the detector assembly to produce a corrected output signal that correctly indicates the concentration of the component of interest.

US Patent:

39349918, Jan 27, 1976

Filed:

Mar 1, 1971

Appl. No.:

5/119601

Inventors:

John P. Frain - Costa Mesa CA
John N. Harman - Placentia CA
Radhakrishna M. Neti - Brea CA

Assignee:

Beckman Instruments, Inc. - Fullerton CA

International Classification:

B01D 3904

US Classification:

55316

Abstract:

A method of analyzing nitric oxide (NO) in a gas stream containing nitrogen dioxide (NO. sub. 2) and a scrubber apparatus for selectively removing nitrogen dioxide from a gas stream containing nitric oxide. The scrubber apparatus comprises a container having an inlet port for the gas stream and an outlet port. The scrubber material in the container includes silver carbonate whereby the scrubber has an efficiency of at least about 99% and a capacity of about 11. 5 parts per million hours of 99% nitrogen dioxide removal per gram of silver carbonate. The method involves passing the gas stream through a scrubber material containing silver carbonate so as to remove nitrogen dioxide from the gas stream while passing the nitric oxide unattenuated and thereafter conveying the gas stream from the scrubber material to an analyzer for nitric oxide. The gas stream is analyzed with the analyzer to determine the nitric oxide concentration therein.