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Official data from INPI

RESINAS TERMOAJUSTÁVEIS, ESTABILIZADAS ÁCIDO OXÁLICO E FENOTIAZINA

ConcedidaInvention Patent

Application data

Number

PI8202937

Type

Invention Patent

Filing

05/19/1982

Publication

05/03/1983

Progress at the INPI

  1. Filing05/19/82
  2. Publication05/03/83
  3. Examination01/10/84
  4. Allowance11/03/87
  5. Grant05/31/88
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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 Chemical Company

US

See this company's full portfolio

Inventors

V. M. (pessoa física)

US

Technical data

Priority claims

US

265,473 · 05/20/1981

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

03/01/1988

RPI 906

Deferimento

#9.1

11/03/1987

RPI 889

Retificação de parecer técnico

#7.3

02/12/1985

RPI 747

Solicitação de exame técnico

#4.1

01/10/1984

RPI 690

Publicação do pedido de patente

#3.1

05/03/1983

RPI 654

Pedido de patente depositado

#2.1

07/13/1982

RPI 612

Carta-patente expirada

#21.1

Patente extinta em 19/05/97

07/01/2008

RPI 1956

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