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Official data from INPI

DISPERSÃO DE ÓLEO-EM-ÁGUA PARA USO AGRÍCOLA

Em AnáliseInvention Patent

Application data

Number

PI8503623

Type

Invention Patent

Filing

07/30/1985

Publication

04/29/1986

Progress at the INPI

  1. Filing07/30/85
  2. Publication04/29/86
  3. Examination08/05/86
  4. Allowance11/27/90
  5. Grant05/28/91
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 08/05/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

O. K. (pessoa física)

JP

Inventors

K. O. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

162.077/1984 · 07/31/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

08/05/1986

RPI 824

Publicação do pedido de patente

#3.1

04/29/1986

RPI 810

Pedido de patente depositado

#2.1

10/01/1985

RPI 780

Carta-patente expirada

#21.1

Patente extinta em 30/07/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

05/28/1991

RPI 1069

Notificação para pagamento de retribuição

#13.1

03/12/1991

RPI 1058

Deferimento

#9.1

11/27/1990

RPI 1043

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