Inventor · Oviedo, FL, US

Otto Phanstiel

41Patents
7h-index
22Co-inventors
69Inventor score

Filing activity: Aug 13, 1990 → Jan 16, 2024

Most-cited inventions

PatentTitleAreaCited byStatus
US5132373A Ortho ester-capped polyphenylene ethers and copolymers prepared therefrom Chemistry; Metallurgy 16 Expired
US5210191A Substituted triazine-capped polyphenylene ethers Chemistry; Metallurgy 15 Expired
US5159075A Substituted chlorotriazines useful for reactive capping of polyphenylene ethers Chemistry; Metallurgy 13 Expired
US5089567A Copolymer-containing compositions from substituted triazine-capped polyphenylene ethers Emerging Cross-Sectional Technologies 13 Expired
US7910363B1 Lipophilic polyamines providing enhanced intracellular delivery of agents by a polyamine transport system Chemistry; Metallurgy 7 Active
US8497398B1 Polyamine transporter selective compounds as anti-cancer agents Chemistry; Metallurgy 7 Active
US9212131B2 Polyamine transport inhibitors as novel therapeutics Chemistry; Metallurgy 7 Active
US7728041B2 Motuporamine mimic agents Human Necessities 6 Active
US8962836B2 Formation of N-protected bis-3,6-(4-aminobutyl)-2,5-diketopiperazine through a cyclic alpha-N-protected amino ester Chemistry; Metallurgy 6 Active
US9187433B2 Formation of N-protected 3,6-bis-(4-aminobutyl) -2, 5-diketopiperazine through a cyclic α-N-protected active amino ester intermediate Chemistry; Metallurgy 5 Active
US5162448A Ortho ester-capped polyphenylene ethers and copolymers prepared therefrom Chemistry; Metallurgy 5 Expired
US5142049A Ortho ester-substituted chlorotriazines as capping agents for polyphenylene ethers Chemistry; Metallurgy 4 Expired
US7001925B1 Compounds and method for enhancing the efficacy of anti-cancer drugs Chemistry; Metallurgy 4 Expired
US9150495B2 Polyamine transporter selective compounds as anti cancer agents Chemistry; Metallurgy 4 Active
US9944609B2 Formation of N-protected bis-3,6-(4-aminobutyl)-2, 5-diketopiperazine through a cyclic alpha-N-protected amino ester Chemistry; Metallurgy 4 Active
US10577331B2 Formation of N-protected 3,6-bis-(4-aminobutyl)-2,5-diketopiperazine through a cyclic alpha-N-protected amino ester intermediate Chemistry; Metallurgy 3 Active
US9346741B2 Polyamine transport selective therapeutic agents with enhanced stability Chemistry; Metallurgy 3 Active
US9598351B2 Polyamine transporter selective compounds as anti-cancer agents Chemistry; Metallurgy 3 Active
US9730902B2 Polyamine transport inhibitors as novel therapeutics Chemistry; Metallurgy 2 Active
US9193691B2 Methods for the synthesis of activated ethylfumarates and their use as intermediates Chemistry; Metallurgy 2 Active
US7728040B1 Polyamine conjugates as selective NMDA inhibitors and anti-cancer drugs Chemistry; Metallurgy 2 Active
US10710957B2 Motuporamine derivatives as antimicrobial agents and antibiotic enhancers against resistant gram-negative bacteria Emerging Cross-Sectional Technologies 2 Active
US10870628B2 Formation of N-protected 3,6-bis-(4-aminobutyl)-2,5-diketopiperazine through a cyclic α-N-protected amino ester Chemistry; Metallurgy 2 Active
US10858325B2 Methods for the synthesis of activated ethylfumarates and their use as intermediates Chemistry; Metallurgy 2 Active
US10071969B2 Methods for the synthesis of activated ethylfumarates and their use as intermediates Chemistry; Metallurgy 2 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.