John D Welch

US Patent:

6506245, Jan 14, 2003

Filed:

Oct 27, 2000

Appl. No.:

09/698328

Inventors:

Thomas A. Kinney - Boston MA
Friedrich K. von Gottberg - Cambridge MA
Yuan Yu - Nashua NH
John F. Welch - Winchester MA

Assignee:

Cabot Corporation - Boston MA

International Classification:

C09B 6700

US Classification:

106493, 106412, 106413, 106472, 106476, 106494, 106495, 106496, 106497, 106498

Abstract:

Colored pigments having one or more desired parameters and/or properties are described. These parameters and/or properties include: a) a particles size of from about 10 nm to about 300 nm; b) an accusizer number of less than 10 particles/ml of dispersion at 15% solids which are greater than 0. 5 micron; c) a filterability such that when in a liquid medium, 100 ml having 10% solids of the colored pigment filters through a 3 micron nylon absolute filter; d) a colored pigment purity of greater than about 80%, based on extractable material; and/or e) a stability such that the above-described properties do not change by more than 50% at 25 degrees C for at least one week. Colored pigments having at least one organic group and having one or more of the above-described characteristics is also described as well as a process for preparing surface-modified colored pigments. The process involves combining at least one treating agent and at least one type of colored pigment(s) in a container to form a mixture and subjecting the mixture to high shearing and introducing at least one diazotizing agent to the mixture at least for a portion of time while the high shearing is taking place, and preferably during the entire time that high shearing is taking place, such that a reaction product is formed and contains surface-modified colored pigment(s).

US Patent:

20030007616, Jan 9, 2003

Filed:

Jul 3, 2001

Appl. No.:

09/898787

Inventors:

David Alves - Sudbury MA, US
Thomas Ward - Conch Key FL, US
John Welch - Billerica MA, US

Assignee:

Davox Corporation

International Classification:

H04M011/00
H04M001/56

US Classification:

379/142140, 379/142010, 379/093170

Abstract:

A method and system for customizing caller ID information can be used in a call center or other telephony system to present customized caller ID information to a called party independent of the telephone line from which the call is made in the call center. The system retrieves at least one call record including a telephone number to be called and a customized caller ID telephone number associated with the call record. The number to be called and customized caller ID number are placed in a setup message formatted using an Integrated Services Digital Network (ISDN) protocol. The setup message is sent to the Public Switched Telephone Network (PSTN) to establish a telephonic connection with the called party. If the called party subscribes to the caller ID service, the customized caller ID telephone number and any associated information will be presented to the called party.