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Official data from INPI

COMPOSIÇÃO AQUOSA DE PERÓXIDO DE HIDROGÊNIO E PROCESSO PARA INIBIR A DECOMPOSIÇÃO DE PERÓXIDO DE HIDROGÊNIO

Em AnáliseInvention Patent

Application data

Number

PI8506446

Type

Invention Patent

Filing

12/23/1985

Publication

09/02/1986

Progress at the INPI

  1. Filing12/23/85
  2. Publication09/02/86
  3. Examination10/18/88
  4. Allowance05/07/91
  5. Grant11/26/91
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 10/18/1988. 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

S. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

686.111 · 12/24/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/18/1988

RPI 939

Publicação do pedido de patente

#3.1

09/02/1986

RPI 828

Pedido de patente depositado

#2.1

04/01/1986

RPI 806

Carta-patente expirada

#21.1

Patente extinta em 23/12/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

11/26/1991

RPI 1095

Notificação para pagamento de retribuição

#13.1

08/20/1991

RPI 1081

Deferimento

#9.1

05/07/1991

RPI 1066

Exigência - art. 36 da LPI

#6.1

10/30/1990

RPI 1039

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