1
Donald F Heaney, Delbert L Boal: Filter bottom. Dravo Corporation, Parmelee Miller Welsh & Kratz, December 20, 1977: US04064050 (15 worldwide citation)

A nozzleless, strainerless filter bottom includes a first set of blocks laid end-to-end in spaced parallel rows to define elongated channels. Transverse grooves in the lower surface of the first set of blocks provide communication between adjacent channels. A second set of blocks laid end-to-end in ...


2
Donald F Heaney: Activated sewage plant and process. Dravo Corporation, Parmelee Miller Welsh & Kratz, September 27, 1977: US04051039 (9 worldwide citation)

There is disclosed an activated sewage disposal plant of the compact or so-called "packaged" type and a method of processing sewage wherein a fast filter is provided through which the effluent liquid from the primary processing is passed, provision being made for backwashing the fast-flow filter fro ...


3
William A Crawford, Tracy J Potter, Donald F Heaney, Brain S DeForce, Samardh Onukuri: Cast parts with improved surface properties and methods for their production. Ethicon Endo Surgery, Nutter McClennan & Fish, July 27, 2010: US07762308 (4 worldwide citation)

Techniques for forming cast parts for medical devices suitable for contact with internal regions of patients are described herein. Such parts can be small in scale (e.g., having a major axis less than 0.3 inches, and/or a minor axis less than about 0.08 inches), and can be formed from metals that ha ...


4
William A Crawford, Tracy J Potter, Donald F Heaney, Brain S DeForce, Samardh Onukuri: Cast parts with improved surface properties and methods for their production. Ethicon Endo Surgery, Nutter McClennen & Fish, December 4, 2007: US07302993

Techniques for forming cast parts for medical devices suitable for contact with internal regions of patients are described herein. Such parts can be small in scale (e.g., having a major axis less than 0.3 inches, and/or a minor axis less than about 0.08 inches), and can be formed from metals that ha ...


5
Nabeel Mark Jadeed, Charles Frank Benjey, Donald F Heaney: Support structures for molded parts. Ethicon Endo Surgery, March 29, 2011: US07914901

Structures and methods for hindering molded part deformation during densification are discussed. Such devices and techniques can help alleviate stresses that tend to result in part deformation during firing, sintering, or other densification processes, and thus reduce the need for secondary straight ...


6
Nabeel Mark Jadeed, Charles Frank Benjey, Donald F Heaney: Support structures for molded parts. Ethicon Endo Surgery, Nutter Mcclennen & Fish, June 19, 2008: US20080142187-A1

Structures and methods for hindering molded part deformation during densification are discussed. Such devices and techniques can help alleviate stresses that tend to result in part deformation during firing, sintering, or other densification processes, and thus reduce the need for secondary straight ...


7
William A Crawford, Tracy J Potter, Donald F Heaney, Brian S DeForce, Samardh Onukuri: Cast parts with improved surface properties and methods for their production. Ethicon Endo Surgery, Nutter Mcclennen & Fish, May 29, 2008: US20080121365-A1

Techniques for forming cast parts for medical devices suitable for contact with internal regions of patients are described herein. Such parts can be small in scale (e.g., having a major axis less than 0.3 inches, and/or a minor axis less than about 0.08 inches), and can be formed from metals that ha ...


8
William A Crawford, Tracy J Potter, Donald F Heaney, Brian S DeForce, Samardh Onukuri: Cast parts with improved surface properties and methods for their production. Ethicon Endo Surgery, Nutter Mcclennen & Fish, May 22, 2008: US20080118771-A1

Techniques for forming cast parts for medical devices suitable for contact with internal regions of patients are described herein. Such parts can be small in scale (e.g., having a major axis less than 0.3 inches, and/or a minor axis less than about 0.08 inches), and can be formed from metals that ha ...


9