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Official data from INPI

POLIETERES POLIMERIZAVEIS DE ADICAO TENDO GRUPOS URETANO PENDENTES ETILENICAMENTE INSATURADOS

ConcedidaInvention Patent

Application data

Number

PI8007373

Type

Invention Patent

Filing

11/11/1980

Publication

07/20/1982

Progress at the INPI

  1. Filing11/11/80
  2. Publication07/20/82
  3. Examination10/02/84
  4. Allowance09/08/87
  5. Grant05/31/88
  6. Expired12/26/95

The letters patent expired on 12/26/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 05/31/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemcial Company

US

See this company's full portfolio

Inventors

B. A. (pessoa física)

H. F. (pessoa física)

T. B. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1988

RPI 919

Notificação para pagamento de retribuição

#13.1

01/26/1988

RPI 901

Deferimento

#9.1

09/08/1987

RPI 881

Exigência - art. 36 da LPI

#6.1

06/11/1985

RPI 764

Solicitação de exame técnico

#4.1

10/02/1984

RPI 728

Publicação do pedido de patente

#3.1

07/20/1982

RPI 613

Carta-patente expirada

#21.1

12/26/1995

RPI 1308

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