Official data from INPI

SEM TITULO

ConcedidaInvention Patent

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Application data

Number

PI8008643

Type

Invention Patent

Filing

12/29/1980

Publication

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Progress at the INPI

Filing12/29/80
Publication
Examination11/17/81
Allowance01/10/84
Grant09/25/84
Expired03/19/96

The letters patent expired on 03/19/1996: 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: 09/25/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Nippon Oil Co. LTD

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Inventors

K. M. (pessoa física)

M. M. (pessoa física)

N. K. (pessoa física)

T. N. (pessoa física)

Y. S. (pessoa física)

Pessoa física

Technical data

IPC Classification

C08F 110/00 C08F 4/64 C08F 4/68

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/25/1984

RPI 727

Notificação para pagamento de retribuição

#13.1

05/02/1984

RPI 706

Deferimento

#9.1

01/10/1984

RPI 690

Exigência - art. 36 da LPI

#6.1

08/23/1983

RPI 670

6.2

12/07/1982

RPI 633

Solicitação de exame técnico

#4.1

11/17/1981

RPI 578

Carta-patente expirada

#21.1

03/19/1996

RPI 1320

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