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Chi-Chang Lee
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Richmond, VA, US
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Patents Grants
last 30 patents
Information
Patent Grant
High grade polyethylene paper
Patent number
5,242,546
Issue date
Sep 7, 1993
E. I. Du Pont de Nemours and Company
Robert J. Evans
A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information
Patent Grant
Polyethylene plexifilamentary film-fibril sheet
Patent number
5,122,412
Issue date
Jun 16, 1992
E. I. Du Pont de Nemours and Company
David C. Jones
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Process for preparing a metallized polyethylene plexfilamentary fil...
Patent number
5,085,817
Issue date
Feb 4, 1992
E. I. Du Pont de Nemours and Company
David C. Jones
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Metallized polyethylene plexifilamentary film-fibril sheet
Patent number
5,057,351
Issue date
Oct 15, 1991
E. I. Du Pont de Nemours and Company
David C. Jones
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Metallized polyethylene plexifilamentary film-fibril sheet
Patent number
4,999,222
Issue date
Mar 12, 1991
E. I. Du Pont de Nemours and Company
David C. Jones
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Point-bonded jet-softened polyethylene film-fibril sheet
Patent number
4,920,001
Issue date
Apr 24, 1990
E. I. Du Pont de Nemours and Company
Chi-Chang Lee
D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
Information
Patent Grant
Point-bonded jet-softened polyethylene film-fibril sheet
Patent number
4,910,075
Issue date
Mar 20, 1990
E. I. Du Pont de Nemours and Company
Chi-Chang Lee
D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
Information
Patent Grant
Stretched-and-bonded polyethylene plexifilamentary nonwoven sheet
Patent number
4,554,207
Issue date
Nov 19, 1985
E. I. Du Pont de Nemours and Company
Chi C. Lee
D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
Information
Patent Grant
Security paper from film-fibril sheets
Patent number
4,310,591
Issue date
Jan 12, 1982
E. I. Du Pont de Nemours and Company
Chi C. Lee
D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
Information
Patent Grant
Process for making security paper from film-fibril sheets
Patent number
4,247,318
Issue date
Jan 27, 1981
E. I. Du Pont de Nemours and Company
Chi C. Lee
D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS