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Official data from INPI

PROCESSO DE EPOXIDAÇÃO DE OLEFINAS DE ALTO PESO MOLECULAR E PROCESSO PARA PREPARAR UM CATALISADOR PARA EPOXIDAR OLEFINAS DE ALTO PESO MOLECULAR

PublicadaInvention Patent

Application data

Number

PI8806162

Type

Invention Patent

Filing

11/21/1988

Publication

08/15/1989

Progress at the INPI

  1. Filing11/21/88
  2. Publication08/15/89
  3. Examination09/24/91
  4. Allowance01/23/96
  5. Grant03/25/97
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 08/15/1989. 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. B. (pessoa física)

US

Technical data

Priority claims

US

124.133 · 11/23/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

08/15/1989

RPI 982

Pedido de patente depositado

#2.1

04/04/1989

RPI 963

Carta-patente expirada

#21.1

Patente extinta em 21/11/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

03/25/1997

RPI 1373

Notificação para pagamento de retribuição

#13.1

07/09/1996

RPI 1336

Deferimento

#9.1

01/23/1996

RPI 1312

Exigência - art. 36 da LPI

#6.1

02/21/1995

RPI 1264

Solicitação de exame técnico

#4.1

09/24/1991

RPI 1086

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