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Official data from INPI

POLIÉSTERES MODIFICADOS COM ÓXIDOS DE ALFA-OLEFINA

ConcedidaInvention Patent

Application data

Number

PI8200372

Type

Invention Patent

Filing

01/25/1982

Publication

11/23/1982

Progress at the INPI

  1. Filing01/25/82
  2. Publication11/23/82
  3. Examination07/31/84
  4. Allowance09/27/88
  5. Grant05/30/89
  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: 05/30/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

B. C. (pessoa física)

US

Inventors

E. P. (pessoa física)

US

P. D. (pessoa física)

US

Technical data

Priority claims

US

249,880 · 04/01/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/30/1989

RPI 971

Notificação para pagamento de retribuição

#13.1

01/10/1989

RPI 951

Deferimento

#9.1

09/27/1988

RPI 936

Exigência - art. 36 da LPI

#6.1

03/19/1985

RPI 752

Solicitação de exame técnico

#4.1

07/31/1984

RPI 719

Publicação do pedido de patente

#3.1

11/23/1982

RPI 631

Pedido de patente depositado

#2.1

03/16/1982

RPI 595

Carta-patente expirada

#21.1

Patente extinta em 25/01/97

07/01/2008

RPI 1956

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