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Official data from INPI

PROCESSO PARA OTIMIZAR O RENDIMENTO DE UM CATALISADOR DE VANÁDIO-FÓSFORO DURANTE A OXIDAÇÃO DE BUTANO EM ANIDRIDO MALÊICO

Em AnáliseInvention Patent

Application data

Number

PI8504134

Type

Invention Patent

Filing

08/28/1985

Publication

06/17/1986

Progress at the INPI

  1. Filing08/28/85
  2. Publication06/17/86
  3. Examination06/21/88
  4. Allowance10/26/93
  5. Grant05/31/94
  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: 10/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Scientific Design Company, Inc.

US

See this company's full portfolio

Inventors

J. W. (pessoa física)

US

M. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

647,302 · 09/04/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

14.1

10/10/1989

RPI 990

14.4

10/03/1989

RPI 989

Solicitação de exame técnico

#4.1

06/21/1988

RPI 922

Publicação do pedido de patente

#3.1

06/17/1986

RPI 817

Pedido de patente depositado

#2.1

11/19/1985

RPI 787

Carta-patente expirada

#21.1

Patente extinta em 28/08/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

05/31/1994

RPI 1226

Deferimento

#9.1

10/26/1993

RPI 1195

Exigência - art. 36 da LPI

#6.1

03/02/1993

RPI 1161

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