Hanh T. Le — 9 Patents at Conoco

Hanh T. Le has been granted 9 US patents while listed as an inventor at Conoco. The first was granted in 1989 and the most recent in May 1992. Hanh T. Le ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Hanh T. Le in Wilmington, DE, US.

Patents per Year

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #	Title	Co-Inventors	Date
5115059	Terpolymers of alkyl acrylates or methacrylates, an olefinically unsaturated homo or heterocyclic-nitrogen compound and an allyl acrylate or methacrylate	—	1992-05-19
5055212	Oil compositions containing alkyl mercaptan derivatives of copolymers of an alpha olefin or an alkyl vinyl ether and an unsaturated alpha, beta-dicarboxylic compound	—	1991-10-08
5015406	Mineral oil or synthetic oil compositions containing terpolymers of alkyl acrylates or methacrylates etc.	—	1991-05-14
4992080	Oil compositions containing alkyl amine derivatives of copolymers of an alpha olefin or an alkyl vinyl ether and an unsaturated alpha, beta-dicarboxylic compound	—	1991-02-12
4980435	Process for producing terpolymers of alkyl acrylates or methacrylates, an olefinically unsaturated homo or heterocyclic-nitrogen compound and an allyl acrylate or methacrylate or perfluoroalkyl ethyl acrylates or methacrylates	—	1990-12-25
4954135	Oil compositions containing terpolymers of alkyl acrylates or methacrylates, an olefinically unsaturated homo or heterocyclic-nitrogen compound and allyl acrylates or methacrylates	—	1990-09-04
4900331	Oil compositions containing alkyl amine or alkyl mercaptan derivatives of copolymers of an alpha olefin or an alkyl vinyl ether and an unsaturated alpha, beta-dicarboxylic copound	—	1990-02-13
4900569	Terpolymers of alkyl acrylates or methacrylates, an olefinically unsaturated homo or heterocyclic-nitrogen compound and an allyl acrylate or methacrylate or perfluoroalkyl ethyl acrylates or methacrylates	—	1990-02-13
4886520	Oil compositions containing terpolymers of alkyl acrylates or methacrylates, an olefinically unsaturated homo or heterocyclic-nitrogen compound and allyl acrylates or methacrylates or perfluoroalkyl ethyl acrylates or methacrylates	—	1989-12-12

Hanh T. Le — 9 Patents

Patents per Year

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