Richard P Houghton

US Patent:

57144397, Feb 3, 1998

Filed:

May 28, 1996

Appl. No.:

8/653962

Inventors:

Richard David Houghton - Harleysville PA
Linda Louise Graham - Flourtown PA
David Prescott Krutsch - Bethayres PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

A01N 3722
A01N 2512

US Classification:

504339

Abstract:

A dispersible granular formulation has been developed which contains at least 60% propanil herbicide. This formulation also provides excellent suspensibility and dispensability characteristics and resists attrition.

US Patent:

45086877, Apr 2, 1985

Filed:

Jun 20, 1983

Appl. No.:

6/505928

Inventors:

Richard W. Houghton - East Longmeadow MA

International Classification:

B01D 1500

US Classification:

422276

Abstract:

A degassing/brine tank, for use in a chlorine generator system for swimming pools, for providing a fresh saturated brine solution continuously to the electrolytic chlorine generator cells of the system and to minimize escape of chlorine gas circulating in the system. The tank, fabricated of synthetic plastic material, has a plurality of vertically separated chambers, including, at its lower end, coaxially arranged inner and outer brine pick-up chambers. The outer annular chamber, open at its lower end, communicates with a salt and water reservoir within which the tank is immersed and a filtered supply of the brine is received by the inner, lower chamber. A check valve coupled to this inner chamber controls the supply of the brine solution into a helical coil by which the saturated brine solution is furnished to the electrolytic chlorine cells. At the top of the tank, the upper chamber is connected by a conduit to a dewatering device of the chlorine generator and heavily chlorinated brine is recycled to the tank through this conduit. The next lower chamber communicates with the upper chamber to permit both the upward escape of chlorine gas and the downward gravity flow of recirculated brine from the dewatering device.

US Patent:

55322093, Jul 2, 1996

Filed:

Jun 6, 1995

Appl. No.:

8/465066

Inventors:

Richard D. Houghton - Harleysville PA
Linda L. Graham - Flourtown PA
David P. Krutsch - Betharyes PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

A01N 3722

US Classification:

504339

Abstract:

A dispersable granular formulation has been developed which contains at least 60% propanil herbicide. This formulation also provides excellent suspensibility and dispersibility characteristics and resists attrition.