PHOTO ENGRAVERS RES INC has a total of 23 patent applications. Its first patent ever was published in 1955. It filed its patents most often in United States, Germany and United Kingdom. Its main competitors in its focus markets surface technology and coating, textiles and paper and audio-visual technology are PROTECTOR AS, HONSHU SHIKOKU BRIDGE EXPRESSWAY CO LTD and ROBOTRON ZENTRUM F FORSCHUNG U.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 10 | |
#2 | Germany | 5 | |
#3 | United Kingdom | 5 | |
#4 | Denmark | 2 | |
#5 | France | 1 |
# | Industry | |
---|---|---|
#1 | Surface technology and coating | |
#2 | Textiles and paper | |
#3 | Audio-visual technology |
# | Name | Total Patents |
---|---|---|
#1 | Borth Paul F | 5 |
#2 | Vaughn Henry C | 3 |
#3 | Borth Paul Frederick | 3 |
#4 | Bradley James William | 2 |
#5 | Daugherty Phillip M | 2 |
#6 | Bradley James W | 2 |
#7 | Elston Lewis William | 2 |
#8 | Elston Lewis W | 2 |
#9 | Rogers Marvin Carson | 2 |
#10 | Daugtherty Phillip M | 1 |
Publication | Filing date | Title |
---|---|---|
US3340195A | Process of etching | |
GB985077A | Powderless etching | |
US3287191A | Etching of printed circuit components | |
US3271282A | Process for etching photoengraving copper | |
US3144368A | Powderless etching | |
US3136670A | Powderless etching | |
US3161552A | Composition and process for powderless etching | |
US3148100A | Composition and process for powderless etching | |
US3033793A | Powderless etching of copper photoengraving plates | |
US3033725A | Powderless etching of copper plate | |
US2746848A | Etching |