USPTO serial 71581208
HI-SIL
Reviewed by CopyMark Law Group
- Filing date
- Status date
- Registration date
- Jul 17, 1951
- Examiner
- —
- Law office
- GENERIC WEB UPDATE
What this means
Status 800 means the registration was renewed after acceptable combined Section 8 and Section 9 filings. The mark remains registered for another 10-year term with active federal protection. Calendar the next Section 8 and 9 deadline in 10 years and maintain monitoring.
Need help with HI-SIL?
If you own this trademark, we can monitor new filings and help with USPTO deadlines. If you do not, we can file a new U.S. application.
Current trademark owner
Monitor this mark, or talk with CopyMark about this registration.
Not the owner?
File a new U.S. trademark application, or speak with our attorneys.
Owner
PITTSBURGH, PA
CLEVELAND, OH
WARSAW, PL
PITTSBURGH PLATE GLASS COMPANY
PITTSBURGH, PA
Attorney of record
The USPTO lists this attorney as the applicant's representative for correspondence on this application.
Bharati Bakshani
Bharati Bakshani LADAS & PARRY LLP1040 AVENUE OF THE AMERICASNEW YORK, NY 10018-3738UNITED STATESGoods and services
| Class | Description | Status | First use |
|---|---|---|---|
| 006 | FINELY DIVIDED SILICA IN PIGMENTARY HYDRATED FORM FOR USE AS A REINFORCING AGENT IN THE MANUFACTURE OF PLASTICS, RUBBER GOODS, AND INSECTICIDES | ACTIVE | Apr 25, 1949 |
Related trademarks
CopyMark links this record to cited §2(d) serials, the owner's other marks, Nice classes, similar mark names, and recently changed USPTO applications.
- Other trademarks owned by PPG INDUSTRIES, INC.
- Other trademarks owned by PPG INDUSTRIES OHIO, INC.
- Other trademarks owned by QEMETICA S.A.
- Other trademarks owned by PITTSBURGH PLATE GLASS COMPANY
- Other trademarks in Class 006
- Similar marks named HI-SIL
- Recently changed USPTO trademarks
- Recently filed trademarks
- Browse all trademark records
Prosecution history
| Date | Code | Event | What it means |
|---|---|---|---|
| Sep 3, 2025 | ASGN | AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP | — |
| Apr 1, 2022 | NA89 | NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED | — |
| Mar 31, 2022 | RNL5 | REGISTERED AND RENEWED (FIFTH RENEWAL - 10 YRS) | — |
| Mar 31, 2022 | 89AG | REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED | The USPTO accepted your combined Section 8 declaration and Section 9 renewal application. The registration is renewed for another 10-year term. The next combined maintenance filing will be due at the following 10-year anniversary. |
| Mar 31, 2022 | APRE | CASE ASSIGNED TO POST REGISTRATION PARALEGAL | — |
| Dec 3, 2021 | E89R | TEAS SECTION 8 & 9 RECEIVED | — |
| Jul 17, 2020 | REM2 | COURTESY REMINDER - SEC. 8 (10-YR)/SEC. 9 E-MAILED | — |
| Jun 29, 2011 | RNL4 | REGISTERED AND RENEWED (FOURTH RENEWAL - 10 YRS) | — |
| Jun 29, 2011 | 89AG | REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED | The USPTO accepted your combined Section 8 declaration and Section 9 renewal application. The registration is renewed for another 10-year term. The next combined maintenance filing will be due at the following 10-year anniversary. |
| Jun 27, 2011 | E89R | TEAS SECTION 8 & 9 RECEIVED | — |
| Mar 2, 2011 | TCCA | TEAS CHANGE OF CORRESPONDENCE RECEIVED | — |
| Feb 17, 2009 | ARAA | ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED | This event means the applicant filed a response to a USPTO Office Action — typically arguments, amendments, or evidence addressing the examiner's objections. The USPTO will review the response and either allow the mark to proceed or issue another action. |
| Feb 17, 2009 | REAP | TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED | — |
| Oct 8, 2008 | CFIT | CASE FILE IN TICRS | — |
| Oct 30, 2001 | RNL3 | REGISTERED AND RENEWED (THIRD RENEWAL - 10 YRS) | The trademark registration was renewed for another 10-year term after acceptable maintenance filings. RNL1, RNL2, and RNL3 indicate which renewal cycle (first, second, or third 10-year term) was recorded. The registration remains active. |
| Oct 30, 2001 | 89AG | REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED | The USPTO accepted your combined Section 8 declaration and Section 9 renewal application. The registration is renewed for another 10-year term. The next combined maintenance filing will be due at the following 10-year anniversary. |
| Jul 9, 2001 | 89AF | REGISTERED - COMBINED SECTION 8 (10-YR) & SEC. 9 FILED | — |
| Sep 18, 1991 | RNL2 | REGISTERED AND RENEWED (SECOND RENEWAL - 10 YRS) | The trademark registration was renewed for another 10-year term after acceptable maintenance filings. RNL1, RNL2, and RNL3 indicate which renewal cycle (first, second, or third 10-year term) was recorded. The registration remains active. |
| Aug 5, 1991 | RRPR | RESPONSE RECEIVED TO POST REG. ACTION | — |
| Aug 5, 1991 | 9.AF | REGISTERED - SEC. 9 FILED/CHECK RECORD FOR SEC. 8 | — |
| Jul 12, 1991 | PRA9 | POST REGISTRATION ACTION MAILED - SEC. 9 | — |
| Jun 11, 1991 | 9.AF | REGISTERED - SEC. 9 FILED/CHECK RECORD FOR SEC. 8 | — |
| Jul 17, 1971 | REN1 | REGISTERED AND RENEWED (FIRST RENEWAL - 20 YRS) | — |