RONALD W LACONTO
Radio and Television Technicians in Leicester, MA
License number
Massachusetts 53725
Issued Date
Jun 25, 1986
Expiration Date
Dec 31, 2012
Type
Registered Technician
Address
Address
Leicester, MA 01524
Professional information
Chemical Mechanical Planarization Using Nanodiamond
US Patent:
2010023, Sep 16, 2010
Filed:
Mar 12, 2010
Appl. No.:
12/723606
Inventors:
Jun Wang - Shrewsbury MA, US
Ronald W. Laconto - Leicester MA, US
Andrew G. Haerle - Sutton MA, US
Ronald W. Laconto - Leicester MA, US
Andrew G. Haerle - Sutton MA, US
Assignee:
SAINT-GOBAIN CERAMICS & PLASTICS, INC. - Worcester MA
International Classification:
H01L 21/302, C09K 13/00
US Classification:
438693, 252 791, 257E21304
Abstract:
A method for chemical mechanical polishing of a substrate includes polishing the substrate at a stock removal rate of greater than about 2.5 Å/min to achieve a Ra of not greater than about 5.0 Å. The substrate can be a III-V substrate or a SiC substrate. The polishing utilizes a chemical mechanical polishing slurry comprising ultra-dispersed diamonds and at least 80 wt % water.
Methods For Machining Inorganic, Non-Metallic Workpieces
US Patent:
8168075, May 1, 2012
Filed:
Dec 13, 2007
Appl. No.:
11/955749
Inventors:
Ronald W. Laconto - Leicester MA, US
Douglas E. Ward - Santa Ana CA, US
Douglas E. Ward - Santa Ana CA, US
International Classification:
B44C 1/22, C03C 15/00, C03C 25/68, C23F 1/00, C25F 3/00
US Classification:
216 88, 438692
Abstract:
A method of machining a workpiece includes applying a fluid between a fixed abrasive component and a workpiece, followed by translation of the fixed abrasive component and the workpiece relative to each other. The fluid contains an anti-clogging agent containing a phosphorus-containing organic chemistry.
Methods For Machining Ceramics
US Patent:
2004022, Nov 18, 2004
Filed:
Apr 25, 2003
Appl. No.:
10/423283
Inventors:
Ronald Laconto - Leicester MA, US
Douglas Ward - Santa Ana CA, US
Douglas Ward - Santa Ana CA, US
Assignee:
Saint-Gobain Ceramics & Plastics, Inc.
International Classification:
B24B001/00
US Classification:
216/089000
Abstract:
A method for machining a ceramic substrate containing Al, including providing a slurry between a substrate and a machine tool, the slurry containing alumina abrasive and an additive including a phosphorus compound, and moving the substrate relative to the machine tool.
Zirconia Disk Substrate Having High Surface Finish
US Patent:
5824386, Oct 20, 1998
Filed:
Aug 15, 1997
Appl. No.:
8/911837
Inventors:
Ronald W. Laconto - Leicester MA
Oh-Hun Kwon - Westboro MA
Oh-Hun Kwon - Westboro MA
Assignee:
Saint-Gobain/Norton Industrial Ceramics Corporation - Worcester MA
International Classification:
B32B 300
US Classification:
428 641
Abstract:
This invention relates to polishing YTZP zirconia disk substrates with colloidal silica to achieve a surface roughness Ra of no more than 8 angstroms.
Optical Polishing Formulation
US Patent:
5989301, Nov 23, 1999
Filed:
Feb 18, 1998
Appl. No.:
9/025730
Inventors:
Ronald W. Laconto - Leicester MA
Rami Schlair - Newton MA
Rami Schlair - Newton MA
Assignee:
Saint-Gobain Industrial Ceramics, Inc. - Worcester MA
International Classification:
C09G 102
US Classification:
51309
Abstract:
An optical polishing slurry with alumina and ceria components is found to produce an improved polishing performance over either component used alone.
Fixed Abrasives For Optical Polishing
US Patent:
6258136, Jul 10, 2001
Filed:
Jul 26, 1999
Appl. No.:
9/361438
Inventors:
Thomas G. Kinisky - Shrewsbury MA
Gwo Shin Swei - East Amherst NY
Dean B. Arvidson - Westborough MA
Ronald W. Laconto - Leicester MA
Rami Schlair - Newton MA
Gwo Shin Swei - East Amherst NY
Dean B. Arvidson - Westborough MA
Ronald W. Laconto - Leicester MA
Rami Schlair - Newton MA
Assignee:
Norton Company - Worcester MA
International Classification:
B24D 300, B24D 1100, B24D 1700
US Classification:
51298
Abstract:
An optical polishing tool comprises alpha alumina and ceria components in relative weight proportions of from 30:70 to 70:30 dispersed in a resin binder. Particularly preferred are coated abrasives. Such coated abrasives produce an improved optical polishing performance.
Methods For Machine Ceramics
US Patent:
8025808, Sep 27, 2011
Filed:
Dec 10, 2007
Appl. No.:
11/953741
Inventors:
Ronald W. Laconto - Leicester MA, US
Douglas E. Ward - Santa Ana CA, US
Douglas E. Ward - Santa Ana CA, US
Assignee:
Saint-Gobain Ceramics & Plastics, Inc. - Worcester MA
International Classification:
B44C 1/22, C03C 25/68, C03C 15/00, C23F 1/00
US Classification:
216 89
Abstract:
A method for machining a ceramic substrate containing Al, including providing a solution containing a phosphorus compound on the ceramic substrate; and machining the substrate with an abrasive.
Polishing Slurries
US Patent:
8105135, Jan 31, 2012
Filed:
Sep 29, 2006
Appl. No.:
11/541431
Inventors:
Ronald W. Laconto - Leicester MA, US
Andrew G. Haerle - Sutton MA, US
Andrew G. Haerle - Sutton MA, US
Assignee:
Saint-Gobain Ceramics & Plastics, Inc. - Worcester MA
International Classification:
B24D 3/06
US Classification:
451559, 51309, 428404, 451 36, 451 41
Abstract:
A polishing slurry includes liquid medium and particulate abrasive. The particulate abrasive includes soft abrasive particles, hard abrasive particles, and colloidal silica particles, wherein the soft abrasive particles have a Mohs hardness of not greater than 8 and the hard abrasive particles have a Mohs hardness of not less than 8, and wherein the soft abrasive particles and the hard abrasive particles are present at a weight ratio of not less than 2:1.