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Official data from INPI

RECIPIENTE E PROCESSO PARA TORNAR SUBSTANCIALMENTE IMPERMEAVEL A SOLVENTES UMIDOS OU SECOS,COMUSTIVEIS,VAPORES E GASES

ConcedidaInvention Patent

Application data

Number

PI8100830

Type

Invention Patent

Filing

02/12/1980

Publication

-

Progress at the INPI

  1. Filing02/12/80
  2. Publication
  3. Examination10/25/83
  4. Allowance10/30/84
  5. Grant04/30/85
  6. Terminated02/04/92

The patent was granted on 04/30/1985 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: 04/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

L. E. (pessoa física)

Inventors

S. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/30/1985

RPI 758

Notificação para pagamento de retribuição

#13.1

03/05/1985

RPI 750

Deferimento

#9.1

10/30/1984

RPI 732

Solicitação de exame técnico

#4.1

10/25/1983

RPI 679

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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