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Official data from INPI

EXTENSORES APLICAVEIS A CONJUNTOS MISTURADORES EM GERAL

ConcedidaUtility Model

Application data

Number

MU6301390

Type

Utility Model

Filing

09/16/1983

Publication

04/23/1985

Progress at the INPI

  1. Filing09/16/83
  2. Publication04/23/85
  3. Examination09/03/85
  4. Allowance03/17/87
  5. Grant10/27/87
  6. Expired12/07/93

The letters patent expired on 12/07/1993: 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: 10/27/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

BECKER METALURGICA [BR]

Inventors

B. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/27/1987

RPI 888

Notificação para pagamento de retribuição

#13.1

07/14/1987

RPI 873

Deferimento

#9.1

03/17/1987

RPI 856

Exigência - art. 36 da LPI

#6.1

09/23/1986

RPI 831

Pedido de certificado de adição de invenção

#5.1

12/31/1985

RPI 793

Solicitação de exame técnico

#4.1

09/03/1985

RPI 776

Publicação do pedido de patente

#3.1

04/23/1985

RPI 757

Pedido de patente depositado

#2.1

11/22/1983

RPI 683

Carta-patente expirada

#21.1

12/07/1993

RPI 1201

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