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Official data from INPI

APARELHO TRANSPORTADOR HELICOIDAL

Em AnáliseInvention Patent

Application data

Number

PI8201326

Type

Invention Patent

Filing

03/11/1982

Publication

01/25/1983

Progress at the INPI

  1. Filing03/11/82
  2. Publication01/25/83
  3. Examination06/21/83
  4. Allowance05/15/84
  5. Grant11/27/84
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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

E. K. (pessoa física)

US

Inventors

E. K. (pessoa física)

US

Technical data

Priority claims

US

242.831 · 03/12/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

08/05/1986

RPI 824

Concessão da patente

#16.1

11/27/1984

RPI 736

Notificação para pagamento de retribuição

#13.1

09/04/1984

RPI 724

Deferimento

#9.1

05/15/1984

RPI 708

Solicitação de exame técnico

#4.1

06/21/1983

RPI 661

Publicação do pedido de patente

#3.1

01/25/1983

RPI 640

Pedido de patente depositado

#2.1

04/27/1982

RPI 601

Carta-patente expirada

#21.1

Patente extinta em 11/03/97

07/01/2008

RPI 1956

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