PERMA TUBES LTD has a total of 11 patent applications. Its first patent ever was published in 1957. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets machines, civil engineering and macromolecular chemistry and polymers are HYMAN INT LTD, RENE DUFOUR and RELIABLE TOY CO LTD.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 5 | |
#2 | Canada | 4 | |
#3 | United Kingdom | 2 |
# | Industry | |
---|---|---|
#1 | Machines | |
#2 | Civil engineering | |
#3 | Macromolecular chemistry and polymers | |
#4 | Machine tools | |
#5 | Textiles and paper |
# | Technology | |
---|---|---|
#1 | Unspecified technologies | |
#2 | Scaffolding | |
#3 | Shaping of plastics | |
#4 | Fillers | |
#5 | Unspecified technologies | |
#6 | Earth drilling | |
#7 | Making wound articles | |
#8 | Certain plastics | |
#9 | Macromolecular compounds compositions | |
#10 | Making metal sheets |
# | Name | Total Patents |
---|---|---|
#1 | Hunkeler Jules W | 5 |
#2 | Goodwin Paul | 3 |
#3 | Alan Batcheller Frederick | 1 |
Publication | Filing date | Title |
---|---|---|
CA1217949A | Concrete forming apparatus and method of manufacturing same | |
US3087241A | Method of producing a seismograph drill hole casing | |
US3003194A | Method of producing bituminous glass-fiber pipe | |
US3084088A | Method of forming a bituminous coated glass fiber pipe | |
GB825807A | Improvements in mandrels for making tubes | |
GB805620A | Improved tube-making apparatus | |
CA727437A | Composite soil pipe | |
CA644673A | Method of producing bituminous glass-fiber pipe | |
CA635709A | Bituminous fiberglas pipe and method of producing same |