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Official data from INPI

COMPOSICAO DE TRABALHAMENTO DE METAL,INIBIDORA DE CORROSAO/LUBRIFICANTE DE ESTIRAMENTO,E PROCESSO APERFEICOADO PARA FABRICAR ARTIGOS DE TIRA DE ACO

Em AnáliseInvention Patent

Application data

Number

PI7806543

Type

Invention Patent

Filing

10/03/1977

Publication

-

Progress at the INPI

  1. Filing10/03/77
  2. Publication
  3. Examination
  4. Allowance09/15/87
  5. Grant04/26/88
  6. Terminated10/03/89

The patent was granted on 04/26/1988 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: 10/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

EXXON RESEARCH ENGINEERING CO

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Inventors

L. H. (pessoa física)

W. S. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

10/03/1989

RPI 989

Concessão da patente

#16.1

04/26/1988

RPI 914

Notificação para pagamento de retribuição

#13.1

01/26/1988

RPI 901

Republicação - classificação IPC

#15.11

09/15/1987

RPI 882

Deferimento

#9.1

09/15/1987

RPI 882

Exigência - art. 36 da LPI

#6.1

09/28/1982

RPI 623

6.2

12/22/1981

RPI 583

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