IP Library › Granted Patent US 6,540,822
Granted Patent Utility
US 6,540,822 · Confirmation No. 2920

POLYBETAINES AS ASPHALT EMULSIFIERS

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 Code Description Pages PDF
2001-03-20 TRNA Transmittal of New Application 2 View
2001-03-20 SPEC Specification 15 View
2001-03-20 CLM Claims 5 View
2001-03-20 ABST Abstract 1 View
2001-03-20 OATH Oath or Declaration filed 2 View
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Quick Facts
Patent No.
US 6,540,822
App. No.
09/812,318
Filed
2001-03-20
Granted
2003-04-01
Pub. No.
US20020183401A1
Art Unit
1712
PTA
0 days