HICKSON AND WELCH LTD has a total of 19 patent applications. Its first patent ever was published in 1963. It filed its patents most often in Canada, United Kingdom and Italy. Its main competitors in its focus markets organic fine chemistry, basic materials chemistry and chemical engineering are HICKSON & WELCH LTD, FINE ORGANICS LTD and PALOMO COLL A L.
# | Country | Total Patents | |
---|---|---|---|
#1 | Canada | 14 | |
#2 | United Kingdom | 2 | |
#3 | Italy | 2 | |
#4 | France | 1 |
# | Industry | |
---|---|---|
#1 | Organic fine chemistry | |
#2 | Basic materials chemistry | |
#3 | Chemical engineering |
# | Technology | |
---|---|---|
#1 | Heterocyclic compounds | |
#2 | Special acyclic compounds | |
#3 | Pigments | |
#4 | Acyclic or carbocyclic compounds | |
#5 | Dry-cleaning fibers |
# | Name | Total Patents |
---|---|---|
#1 | Sarkar Asim K | 13 |
#2 | Adams Dennis A W | 7 |
#3 | Sarkar Asim Kumar | 3 |
Publication | Filing date | Title |
---|---|---|
GB1130882A | 1,3-diaryl-pyrazolines and their use as optical whitening agents | |
GB1021193A | Triazinylamino stilbene sulphenic acid derivatives | |
CA790591A | Optical whitening agents | |
CA732217A | Phosphorodithiolates and process for the production thereof | |
CA616759A | Optical whitening agents | |
CA848457A | Optical whitening agents | |
CA615045A | Optical whitening agents | |
CA867394A | Optical whitening agents | |
CA839270A | Triazol-styryl whitening agents | |
CA643978A | Optical whitening agents | |
CA750922A | Optical whitening agents | |
CA717978A | Optical whitening agents | |
CA792771A | Optical whitening agents | |
CA701225A | Stilbyl sulfones and preparation | |
CA630033A | Optical whitening agents | |
CA717538A | Optical whitening agents |