Inventor · Fremont, CA, US

Mark Welch

35Patents
19h-index
41Co-inventors
81Inventor score

Filing activity: Sep 28, 1999 → Jan 15, 2021

Most-cited inventions

PatentTitleAreaCited byStatus
US6376246B1 Oligonucleotide mediated nucleic acid recombination Chemistry; Metallurgy 383 Expired
US6521453B1 Oligonucloetide mediated nucleic acid recombination Chemistry; Metallurgy 226 Expired
US6436675B1 Use of codon-varied oligonucleotide synthesis for synthetic shuffling Performing Operations; Transporting 213 Expired
US6319714A Oligonucleotide mediated nucleic acid recombination Chemistry; Metallurgy 188 Expired
US6368861B1 Oligonucleotide mediated nucleic acid recombination Chemistry; Metallurgy 178 Expired
US6479652B1 Oligonucleotide mediated nucleic acid recombination Chemistry; Metallurgy 177 Expired
US6426224B1 Oligonucleotide mediated nucleic acid recombination Chemistry; Metallurgy 162 Expired
US6423542B1 Oligonucleotide mediated nucleic acid recombination Chemistry; Metallurgy 160 Expired
US8058001B2 Oligonucleotide mediated nucleic acid recombination Chemistry; Metallurgy 118 Active
US6902922B2 Subtilisin variants Chemistry; Metallurgy 71 Expired
US7462469B2 Integrated system for diversity generation and screening Emerging Cross-Sectional Technologies 65 Expired
US8014961B2 Integrated systems and methods for diversity generation and screening Emerging Cross-Sectional Technologies 63 Active
US8029988B2 Oligonucleotide mediated nucleic acid recombination Chemistry; Metallurgy 61 Active
US7220566B2 Subtilisin variants Chemistry; Metallurgy 57 Expired
US9428767B2 Enhanced nucleic acid constructs for eukaryotic gene expression Chemistry; Metallurgy 25 Active
US9534234B2 Enhanced nucleic acid constructs for eukaryotic gene expression Chemistry; Metallurgy 22 Active
US9574209B2 Enhanced nucleic acid constructs for eukaryotic gene expression Chemistry; Metallurgy 21 Active
US9580697B2 Enhanced nucleic acid constructs for eukaryotic gene expression Chemistry; Metallurgy 21 Active
US7561973B1 Methods for determining properties that affect an expression property value of polynucleotides in an expression system Physics 20 Active
US7561972B1 Synthetic nucleic acids for expression of encoded proteins Physics 19 Active
US6777218B1 Subtilase enzymes having an improved wash performance on egg stains Chemistry; Metallurgy 16 Expired
US8126653B2 Synthetic nucleic acids for expression of encoded proteins Physics 9 Active
US8401798B2 Systems and methods for constructing frequency lookup tables for expression systems Physics 7 Active
US10344285B2 DNA vectors, transposons and transposases for eukaryotic genome modification Chemistry; Metallurgy 4 Active
US10927384B2 DNA vectors, transposons and transposases for eukaryotic genome modification Chemistry; Metallurgy 4 Active

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