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Official data from INPI

COMPOSICAO DE REVESTIMENTO DE UMA MISTURA FORMADORA DE FILME E DE UM SOLVENTE PARA MISTURA, E SUBSTRATO REVESTIDO COM UMA PRIMEIRA COMPOSICAO DE REVESTIMENTO CURADA

ConcedidaInvention Patent

Application data

Number

PI8101549

Type

Invention Patent

Filing

03/21/1980

Publication

-

Progress at the INPI

  1. Filing03/21/80
  2. Publication
  3. Examination10/04/83
  4. Allowance12/29/87
  5. Grant06/28/88
  6. Terminated08/23/94

The patent was granted on 06/28/1988 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 06/28/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT

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Inventors

T. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1988

RPI 923

Notificação para pagamento de retribuição

#13.1

05/10/1988

RPI 916

Deferimento

#9.1

12/29/1987

RPI 897

Conhecimento de parecer técnico

#7.1

05/02/1984

RPI 706

Solicitação de exame técnico

#4.1

10/04/1983

RPI 676

Anuidade - prazo legal encerrado

#18.2

08/23/1994

RPI 1238

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