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Official data from INPI

COMPOSIÇÃO DE RESINA DE ÉSTER EPÓXI ETILENICAMENTE INSATURADA E TERMOFIXA

ConcedidaInvention Patent

Application data

Number

PI8202834

Type

Invention Patent

Filing

05/14/1982

Publication

04/26/1983

Progress at the INPI

  1. Filing05/14/82
  2. Publication04/26/83
  3. Examination09/24/85
  4. Allowance03/07/89
  5. Grant10/24/89
  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: 10/24/1989. 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

R. K. (pessoa física)

FR

Technical data

Priority claims

EP

81103738-1 · 05/15/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/24/1989

RPI 992

Notificação para pagamento de retribuição

#13.1

07/11/1989

RPI 977

Deferimento

#9.1

03/07/1989

RPI 959

Exigência - art. 36 da LPI

#6.1

07/19/1988

RPI 926

Solicitação de exame técnico

#4.1

09/24/1985

RPI 779

14.1

09/27/1983

RPI 675

Publicação do pedido de patente

#3.1

04/26/1983

RPI 653

Pedido de patente depositado

#2.1

06/29/1982

RPI 610

Carta-patente expirada

#21.1

Patente extinta em 14/05/97

07/01/2008

RPI 1956

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