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Official data from INPI

PROCESSO PARA PREPARAR CATALISADORES ADEQUADOS PARA OXIDAÇÃO DE ETILENO, E, PROCESSO PARA PREPARAR ÓXIDO DE ETILENO

PublicadaInvention Patent

Application data

Number

PI8700848

Type

Invention Patent

Filing

02/23/1987

Publication

12/15/1987

Progress at the INPI

  1. Filing02/23/87
  2. Publication12/15/87
  3. Examination07/31/90
  4. Allowance09/15/98
  5. Grant12/29/98
  6. Expired12/05/12

The letters patent expired on 12/05/2012: 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: 12/15/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Process Research And Development Company

US

Scientific Design Company, Inc.

US

The Halcon Sd Group, Inc.

US

Inventors

K. L. (pessoa física)

US

M. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

832,099 · 02/24/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/15/1987

RPI 895

Pedido de patente depositado

#2.1

06/16/1987

RPI 869

Carta-patente expirada

#21.1

Patente extinta em 29/12/2008

12/05/2012

RPI 2187

Concessão da patente

#16.1

12/29/1998

RPI 1460

Deferimento

#9.1

09/15/1998

RPI 1447

Exigência - art. 36 da LPI

#6.1

05/05/1998

RPI 1428

Pedido de certificado de adição de invenção

#5.1

12/26/1990

RPI 1047

Solicitação de exame técnico

#4.1

07/31/1990

RPI 1026

14.1

03/06/1990

RPI 1008

14.4

03/01/1990

RPI 1007

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