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Official data from INPI

RESISTOR VARIÁVEL.

ConcedidaUtility Model

Application data

Number

MU6301456

Type

Utility Model

Filing

10/07/1983

Publication

05/14/1985

Progress at the INPI

  1. Filing10/07/83
  2. Publication05/14/85
  3. Examination10/01/85
  4. Allowance10/06/87
  5. Grant06/28/88
  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.

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Latest action published by the INPI: 06/28/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica Nacional - CSN

RJ, BR

See this company's full portfolio

Inventors

C. M. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1988

RPI 923

Notificação para pagamento de retribuição

#13.1

02/09/1988

RPI 903

Deferimento

#9.1

10/06/1987

RPI 885

Republicação - classificação IPC

#15.11

04/14/1987

RPI 860

Exigência - art. 36 da LPI

#6.1

09/23/1986

RPI 831

Solicitação de exame técnico

#4.1

10/01/1985

RPI 780

Publicação do pedido de patente

#3.1

05/14/1985

RPI 760

Pedido de patente depositado

#2.1

12/06/1983

RPI 685

Carta-patente expirada

#21.1

12/07/1993

RPI 1201

Cessão de direito de exploração

#22.1

05/29/1990

RPI 1020

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