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Official data from INPI

SOLUCAO DE SALMOURA ESPESSADA E PROCESSO PARA SUA PREPARACAO

Em AnáliseInvention Patent

Application data

Number

PI8103925

Type

Invention Patent

Filing

06/20/1980

Publication

03/09/1982

Progress at the INPI

  1. Filing06/20/80
  2. Publication03/09/82
  3. Examination03/27/84
  4. Allowance07/14/87
  5. Grant12/29/87
  6. Terminated09/13/94

The patent was granted on 12/29/1987 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: 10/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NL INDUSTRIES INC

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Inventors

H. L. (pessoa física)

H. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

10/10/1989

RPI 990

20.7

10/03/1989

RPI 989

Concessão da patente

#16.1

12/29/1987

RPI 897

Notificação para pagamento de retribuição

#13.1

11/10/1987

RPI 890

Deferimento

#9.1

07/14/1987

RPI 873

Conhecimento de parecer técnico

#7.1

02/26/1985

RPI 749

6.2

10/02/1984

RPI 728

Solicitação de exame técnico

#4.1

03/27/1984

RPI 701

Publicação do pedido de patente

#3.1

03/09/1982

RPI 594

Anuidade - prazo legal encerrado

#18.2

09/13/1994

RPI 1241

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