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Official data from INPI

USO DE COMPOSICAO DE ACIDO METILENO FOSFORICO DERIVADOS DE ADUTOS DE AMINOHIDROCARBILPIPERAZINA-UREIA COMO RETARDADORES DE CIMENTO

Em AnáliseInvention Patent

Application data

Number

PI8407053

Type

Invention Patent

Filing

09/02/1983

Publication

08/13/1985

Progress at the INPI

  1. Filing09/02/83
  2. Publication08/13/85
  3. Abandoned05/05/87
  4. Allowance
  5. Grant
  6. In force

The applicant withdrew the application. The case ended without a patent.

Talk to a specialist

Latest action published by the INPI: 05/16/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DOW CHEMICAL CO [US]

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Inventors

C. [. (pessoa física)

W. [. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

10.1

05/16/1989

RPI 969

Exigência - art. 36 da LPI

#6.1

03/07/1989

RPI 959

Solicitação de exame técnico

#4.1

05/05/1987

RPI 863

Notificação de entrada na fase nacional - PCT

#1.3

08/13/1985

RPI 773

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