Katherine J Hoffman

US Patent:

20020068259, Jun 6, 2002

Filed:

Aug 7, 2001

Appl. No.:

09/924405

Inventors:

Paul Chiu - Mountain View CA, US
Katherine Hoffman - San Jose CA, US

International Classification:

A61C005/00

US Classification:

433/215000, 433/226000, 433/080000

Abstract:

A method and system for selectively staining dental composite materials includes an applicator () and a disclosing agent (). In one embodiment, the applicator () provides the disclosing agent () to a tooth surface and a composite filling of the tooth. The composite filling is selectively stained to reveal the presence and location of the composite filling. In another embodiment, the tooth surface is selectively stained to reveal the presence and location of the composite filling.

US Patent:

20220411301, Dec 29, 2022

Filed:

Oct 14, 2020

Appl. No.:

17/770270

Inventors:

- Palo Alto CA, US
Rajdeep S. Dhaliwal - Oakland CA, US
Feng Guo - Los Altos CA, US
Meng Hong Heng - Belmont CA, US
Katherine Hoffman - Mountain View CA, US
Jacob Andrew Latone - San Jose CA, US
Lawrence Philip Wackett - St. Paul MN, US
Gregory M. Whited - Palo Alto CA, US

International Classification:

C02F 3/34
C02F 1/70

Abstract:

The present disclosure is generally related to the fields of biology, inorganic chemistry, organic chemistry, molecular biology, enzymology, chlorinated water treatment processes and the like. More particularly, certain embodiments are related to reducing cyanuric acid concentrations in aqueous liquids, such as chlorinated swimming pool water, chlorinated hot tub water and the like.