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Official data from INPI

PROCESSO DE PREPARACAO DE UMA COMPOSICAO DE REVESTIMENTO DE BASE AQUOSA

ConcedidaInvention Patent

Application data

Number

PI8306887

Type

Invention Patent

Filing

04/16/1982

Publication

03/07/1984

Progress at the INPI

  1. Filing04/16/82
  2. Publication03/07/84
  3. Examination06/05/84
  4. Allowance02/09/88
  5. Grant08/30/88
  6. Terminated05/30/95

The patent was granted on 08/30/1988 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: 08/30/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT [US]

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Inventors

H. [. (pessoa física)

H. [. (pessoa física)

O. [. (pessoa física)

S. W. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/30/1988

RPI 932

Notificação para pagamento de retribuição

#13.1

06/07/1988

RPI 920

Deferimento

#9.1

02/09/1988

RPI 903

Conhecimento de parecer técnico

#7.1

04/23/1985

RPI 757

Solicitação de exame técnico

#4.1

06/05/1984

RPI 711

Notificação de entrada na fase nacional - PCT

#1.3

03/07/1984

RPI 698

Anuidade - prazo legal encerrado

#18.2

05/30/1995

RPI 1278

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