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Official data from INPI

COMPOSIÇÃO INIBIDORA DE CORROSÃO E PROCESSO PARA INIBIÇÃO DE CORROSÃO EM UM SISTEMA AQUOSO.

ConcedidaInvention Patent

Application data

Number

PI8002533

Type

Invention Patent

Filing

04/24/1980

Publication

-

Progress at the INPI

  1. Filing04/24/80
  2. Publication
  3. Examination01/18/83
  4. Allowance01/06/87
  5. Grant08/25/87
  6. Terminated02/04/92

The patent was granted on 08/25/1987 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 08/25/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. C. (pessoa física)

US

Inventors

L. E. (pessoa física)

Technical data

IPC Classification

Priority claims

US

033.122 · 04/25/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/25/1987

RPI 879

Deferimento

#9.1

01/06/1987

RPI 846

Republicação - classificação IPC

#15.11

03/13/1984

RPI 699

Exigência - art. 36 da LPI

#6.1

01/10/1984

RPI 690

Solicitação de exame técnico

#4.1

01/18/1983

RPI 639

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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