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Official data from INPI

APERFEIÇOAMENTO EM BASE DE CILINDRO DE NITROGÊNIO

Em AnáliseInvention Patent

Application data

Number

PI8604283

Type

Invention Patent

Filing

09/08/1986

Publication

04/14/1987

Progress at the INPI

  1. Filing09/08/86
  2. Publication04/14/87
  3. Examination06/23/87
  4. Allowance04/04/89
  5. Grant03/30/93
  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: 08/01/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Prodty Engenharia e Comércio Ltda.

SP, BR

Inventors

L. M. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

08/01/1989

RPI 980

Deferimento

#9.1

04/04/1989

RPI 963

Solicitação de exame técnico

#4.1

06/23/1987

RPI 870

Publicação antecipada

#3.2

04/14/1987

RPI 860

Pedido de patente depositado

#2.1

03/17/1987

RPI 856

Carta-patente expirada

#21.1

Patente extinta em 08/09/2001

07/22/2008

RPI 1959

20.4

07/27/1993

RPI 1182

Concessão da patente

#16.1

03/30/1993

RPI 1165

137

01/26/1993

RPI 1156

15.18

03/19/1991

RPI 1059

Retificação

#15.3

11/20/1990

RPI 1042

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