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Official data from INPI

PROCESSO DE APERFEIÇOAMENTO NA RECUPERAÇÃO DE ETANO A PARTIR DE GÁS NATURAL

Arquivada/ExtintaInvention Patent

Application data

Number

PI8904308

Type

Invention Patent

Filing

08/28/1989

Publication

10/02/1990

Progress at the INPI

  1. Filing08/28/89
  2. Publication10/02/90
  3. Examination03/05/91
  4. Allowance12/10/96
  5. Grant08/26/97
  6. Expired05/21/13

The letters patent expired on 05/21/2013: 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: 05/21/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

McDermott International, Inc.

US

See this company's full portfolio

Inventors

G. I. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

274.243 · 11/21/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 28/08/2009

05/21/2013

RPI 2211

Concessão da patente

#16.1

08/26/1997

RPI 1395

Deferimento

#9.1

12/10/1996

RPI 1358

Exigência - art. 36 da LPI

#6.1

01/23/1996

RPI 1312

Solicitação de exame técnico

#4.1

03/05/1991

RPI 1057

Publicação do pedido de patente

#3.1

10/02/1990

RPI 1035

Pedido de patente depositado

#2.1

05/01/1990

RPI 1016

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