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Official data from INPI

SEPARAÇÃO DE 3,5-DICLOROCUMENO A PARTIR DE UMA MISTURA DE 3,5-DICLOROCUMENO E 2,4-DICLOROCUMENO

ConcedidaInvention Patent

Application data

Number

PI8202547

Type

Invention Patent

Filing

04/30/1982

Publication

12/06/1983

Progress at the INPI

  1. Filing04/30/82
  2. Publication12/06/83
  3. Examination04/15/86
  4. Allowance01/24/89
  5. Grant08/29/89
  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: 08/29/1989. 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

J. D. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

05/30/1989

RPI 971

Deferimento

#9.1

01/24/1989

RPI 953

Exigência - art. 36 da LPI

#6.1

05/24/1988

RPI 918

Conhecimento de parecer técnico

#7.1

12/02/1986

RPI 841

Solicitação de exame técnico

#4.1

04/15/1986

RPI 808

Publicação do pedido de patente

#3.1

12/06/1983

RPI 685

Pedido de patente depositado

#2.1

06/22/1982

RPI 609

Carta-patente expirada

#21.1

Patente extinta em 30/04/97

07/01/2008

RPI 1956

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