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Official data from INPI

PROCESSO DE TRATAMENTO COM AMONÍACO E INSTALAÇÃO

Em AnáliseInvention Patent

Application data

Number

PI8606945

Type

Invention Patent

Filing

10/16/1986

Publication

11/03/1987

Progress at the INPI

  1. Filing10/16/86
  2. Publication11/03/87
  3. Examination10/10/89
  4. Allowance07/20/93
  5. Grant05/31/94
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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

L'Air Liquide,Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude

FR

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Inventors

J. B. (pessoa física)

FR

J. P. (pessoa física)

US

M. C. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

85/15864 · 10/25/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/10/1989

RPI 990

Notificação de entrada na fase nacional - PCT

#1.3

11/03/1987

RPI 889

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C10K 1/12; C01B 31/20; B01D 53/14.

03/20/2018

RPI 2463

Carta-patente expirada

#21.1

Patente extinta em 16/10/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

05/31/1994

RPI 1226

9.1.3

10/05/1993

RPI 1192

Deferimento

#9.1

07/20/1993

RPI 1181

Exigência - art. 36 da LPI

#6.1

07/07/1992

RPI 1127

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