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Official data from INPI

APARELHO PARA MINISTRAR AREIA

Prazo de SigiloInvention Patent

Application data

Number

PI8806396

Type

Invention Patent

Filing

12/05/1988

Publication

07/24/1990

Progress at the INPI

  1. Filing12/05/88
  2. Publication07/24/90
  3. Examination11/06/90
  4. Allowance03/28/95
  5. Grant10/31/95
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 04/18/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Amsted Industries Incorporated

US

See this company's full portfolio

Inventors

J. P. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

04/18/1989

RPI 965

Carta-patente expirada

#21.1

Patente extinta em 05/12/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

10/31/1995

RPI 1300

Republicação - classificação IPC

#15.11

04/04/1995

RPI 1270

Deferimento

#9.1

03/28/1995

RPI 1269

Exigência - art. 36 da LPI

#6.1

08/09/1994

RPI 1236

Solicitação de exame técnico

#4.1

11/06/1990

RPI 1040

Publicação do pedido de patente

#3.1

07/24/1990

RPI 1025

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