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Official data from INPI

PROCESSO DE BIODIGESTÃO EM FASE SEMI-SÓLIDA

Em AnáliseInvention Patent

Application data

Number

PI8406173

Type

Invention Patent

Filing

11/29/1984

Publication

06/24/1986

Progress at the INPI

  1. Filing11/29/84
  2. Publication06/24/86
  3. Examination05/24/88
  4. Allowance05/26/92
  5. Grant03/30/93
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 05/24/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Instituto de Pesquisas Tecnológicas de São Paulo S/A - IPT

SP, BR

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Inventors

R. V. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

05/24/1988

RPI 918

Publicação do pedido de patente

#3.1

06/24/1986

RPI 818

Pedido de patente depositado

#2.1

01/21/1986

RPI 796

Carta-patente expirada

#21.1

Patente extinta em 29/11/99

07/08/2008

RPI 1957

Concessão da patente

#16.1

03/30/1993

RPI 1165

Notificação para pagamento de retribuição

#13.1

10/20/1992

RPI 1142

Deferimento

#9.1

05/26/1992

RPI 1121

Exigência - art. 36 da LPI

#6.1

08/20/1991

RPI 1081

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