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Official data from INPI

PROCESSO PARA A PRODUÇÃO DE UM POLÍMERO DENSO EM FORMA DE ESTRELA

DeferidaInvention Patent

Application data

Number

PI8307680

Type

Invention Patent

Filing

12/29/1983

Publication

12/11/1984

Progress at the INPI

  1. Filing12/29/83
  2. Publication12/11/84
  3. Examination06/16/87
  4. Allowance12/05/89
  5. Grant08/28/90
  6. Terminated05/30/95

The patent was granted on 08/28/1990 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: 12/05/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

D. T. (pessoa física)

US

J. D. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

456.226 · 01/07/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

12/05/1989

RPI 998

Exigência - art. 36 da LPI

#6.1

01/17/1989

RPI 952

Exigência - art. 36 da LPI

#6.1

07/19/1988

RPI 926

Solicitação de exame técnico

#4.1

06/16/1987

RPI 869

Notificação de entrada na fase nacional - PCT

#1.3

12/11/1984

RPI 738

Anuidade - prazo legal encerrado

#18.2

05/30/1995

RPI 1278

Concessão da patente

#16.1

08/28/1990

RPI 1030

Notificação para pagamento de retribuição

#13.1

04/10/1990

RPI 1013

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