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Official data from INPI

VEÍCULO COMPACTADOR, APARELHO E PROCESSO PAR MEDIR A DENSIDADE DE UM MATERIAL DE PROVA

Em AnáliseInvention Patent

Application data

Number

PI8702615

Type

Invention Patent

Filing

05/21/1987

Publication

02/23/1988

Progress at the INPI

  1. Filing05/21/87
  2. Publication02/23/88
  3. Examination06/07/88
  4. Allowance06/02/92
  5. Grant01/26/93
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 06/07/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Troxler Electronic Laboratories, Inc

US

Inventors

W. T. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

865.776 · 05/22/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

06/07/1988

RPI 920

Publicação do pedido de patente

#3.1

02/23/1988

RPI 905

Pedido de patente depositado

#2.1

08/04/1987

RPI 876

Carta-patente expirada

#21.1

Patente extinta em 21/05/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

01/26/1993

RPI 1156

Notificação para pagamento de retribuição

#13.1

10/20/1992

RPI 1142

Deferimento

#9.1

06/02/1992

RPI 1122

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