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Official data from INPI

PROCESSO PARA FORMAÇÃO DE UM REVESTIMENTO LUBRIFICANTE SECO EM AÇO PRONTO PARA ESTIRAMENTO PROFUNDO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9101208

Type

Invention Patent

Filing

03/26/1991

Publication

11/05/1991

Progress at the INPI

  1. Filing03/26/91
  2. Publication11/05/91
  3. Examination01/11/94
  4. Allowance07/13/99
  5. Grant12/28/99
  6. Expired05/28/13

The letters patent expired on 05/28/2013: 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: 05/28/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. C. (pessoa física)

US

Armco Steel Company, L.P

US

See this company's full portfolio

Inventors

C. G. (pessoa física)

US

D. R. (pessoa física)

US

F. M. (pessoa física)

US

Technical data

Priority claims

US

499.230 · 03/26/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 26/03/2011

05/28/2013

RPI 2212

Transferência deferida

#25.1

Transferido de: Armco Steel Company, L.P.

07/04/2000

RPI 1539

Concessão da patente

#16.1

12/28/1999

RPI 1512

Deferimento

#9.1

07/13/1999

RPI 1488

Exigência - art. 36 da LPI

#6.1

01/05/1999

RPI 1461

Solicitação de exame técnico

#4.1

01/11/1994

RPI 1206

Publicação do pedido de patente

#3.1

11/05/1991

RPI 1092

Pedido de patente depositado

#2.1

09/24/1991

RPI 1086

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