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SPENCER CHEM CO

Overview
  • Total Patents
    162
About

SPENCER CHEM CO has a total of 162 patent applications. Its first patent ever was published in 1947. It filed its patents most often in United States, United Kingdom and Canada. Its main competitors in its focus markets organic fine chemistry, macromolecular chemistry and polymers and basic materials chemistry are TIANJIN JIURI CHEMICAL CO LTD, APITAL PROD IND and ADVANCED SYNTECH LLC.

Patent filings in countries

World map showing SPENCER CHEM COs patent filings in countries

Patent filings per year

Chart showing SPENCER CHEM COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hopkins Thomas R 22
#2 Francis William C 11
#3 Pullen Joe W 7
#4 Hill Robert W 7
#5 Hopkins Thomas Robert 6
#6 Neighbors Ralph P 6
#7 Bull Willard C 6
#8 Hoffmann Otto L 6
#9 Clark Clayton F 5
#10 Marhofer Edwin G 5

Latest patents

Publication Filing date Title
GB984650A Improvements in or relating to fertilisers
GB961624A Improvements in or relating to isocyanurate compounds
GB944135A Fertilisers
US3131829A Article-carrying container
US3132150A 4-halo-2-butynayl n-(1, 2, 4-triazol-3-yl)-carbamates
GB949638A Polyethylene compositions and processes for producing them
GB975707A Isocyanurate polymers and processes for their preparation
GB912964A A process for the production of triallylic isocyanurates
AT237287B Process for the preparation of a homogeneous ethylene-alkyl acrylate copolymer resin
ES269341A1 Process to polymerize ethylene in aqueous media and obtain directly a stable and aqueous polyethylene latex (Machine-translation by Google Translate, not legally binding)
ES269340A1 Polymerisation of ethylene in aqueous system
GB935603A Polyethylene composition
US3119803A Polymerization of ethylene with a decanoyl peroxide catalyst
US3119737A Compositions and methods for controlling soil-dwelling fungi
US3131509A Compositions and methods for reducing herbicidal injury
US3132142A Isocyanurate compounds
GB900969A Ethylene copolymers
GB902809A Polypropylene composition
US3083081A Fertilizer granulating drum unit
GB965253A Process of producing polyethylene